How to Use Calculate Battery Level and Charge Status using HTML5

When someone visits your website, you can easily retrieve information about the charge level of their mobile or laptop’s battery through the HTML5 Battery API. This is currently supported on Google Chrome, Opera & Firefox on the desktop and Chrome for Android.

#html5 

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How to Use Calculate Battery Level and Charge Status using HTML5
Chloe  Butler

Chloe Butler

1667425440

Pdf2gerb: Perl Script Converts PDF Files to Gerber format

pdf2gerb

Perl script converts PDF files to Gerber format

Pdf2Gerb generates Gerber 274X photoplotting and Excellon drill files from PDFs of a PCB. Up to three PDFs are used: the top copper layer, the bottom copper layer (for 2-sided PCBs), and an optional silk screen layer. The PDFs can be created directly from any PDF drawing software, or a PDF print driver can be used to capture the Print output if the drawing software does not directly support output to PDF.

The general workflow is as follows:

  1. Design the PCB using your favorite CAD or drawing software.
  2. Print the top and bottom copper and top silk screen layers to a PDF file.
  3. Run Pdf2Gerb on the PDFs to create Gerber and Excellon files.
  4. Use a Gerber viewer to double-check the output against the original PCB design.
  5. Make adjustments as needed.
  6. Submit the files to a PCB manufacturer.

Please note that Pdf2Gerb does NOT perform DRC (Design Rule Checks), as these will vary according to individual PCB manufacturer conventions and capabilities. Also note that Pdf2Gerb is not perfect, so the output files must always be checked before submitting them. As of version 1.6, Pdf2Gerb supports most PCB elements, such as round and square pads, round holes, traces, SMD pads, ground planes, no-fill areas, and panelization. However, because it interprets the graphical output of a Print function, there are limitations in what it can recognize (or there may be bugs).

See docs/Pdf2Gerb.pdf for install/setup, config, usage, and other info.


pdf2gerb_cfg.pm

#Pdf2Gerb config settings:
#Put this file in same folder/directory as pdf2gerb.pl itself (global settings),
#or copy to another folder/directory with PDFs if you want PCB-specific settings.
#There is only one user of this file, so we don't need a custom package or namespace.
#NOTE: all constants defined in here will be added to main namespace.
#package pdf2gerb_cfg;

use strict; #trap undef vars (easier debug)
use warnings; #other useful info (easier debug)


##############################################################################################
#configurable settings:
#change values here instead of in main pfg2gerb.pl file

use constant WANT_COLORS => ($^O !~ m/Win/); #ANSI colors no worky on Windows? this must be set < first DebugPrint() call

#just a little warning; set realistic expectations:
#DebugPrint("${\(CYAN)}Pdf2Gerb.pl ${\(VERSION)}, $^O O/S\n${\(YELLOW)}${\(BOLD)}${\(ITALIC)}This is EXPERIMENTAL software.  \nGerber files MAY CONTAIN ERRORS.  Please CHECK them before fabrication!${\(RESET)}", 0); #if WANT_DEBUG

use constant METRIC => FALSE; #set to TRUE for metric units (only affect final numbers in output files, not internal arithmetic)
use constant APERTURE_LIMIT => 0; #34; #max #apertures to use; generate warnings if too many apertures are used (0 to not check)
use constant DRILL_FMT => '2.4'; #'2.3'; #'2.4' is the default for PCB fab; change to '2.3' for CNC

use constant WANT_DEBUG => 0; #10; #level of debug wanted; higher == more, lower == less, 0 == none
use constant GERBER_DEBUG => 0; #level of debug to include in Gerber file; DON'T USE FOR FABRICATION
use constant WANT_STREAMS => FALSE; #TRUE; #save decompressed streams to files (for debug)
use constant WANT_ALLINPUT => FALSE; #TRUE; #save entire input stream (for debug ONLY)

#DebugPrint(sprintf("${\(CYAN)}DEBUG: stdout %d, gerber %d, want streams? %d, all input? %d, O/S: $^O, Perl: $]${\(RESET)}\n", WANT_DEBUG, GERBER_DEBUG, WANT_STREAMS, WANT_ALLINPUT), 1);
#DebugPrint(sprintf("max int = %d, min int = %d\n", MAXINT, MININT), 1); 

#define standard trace and pad sizes to reduce scaling or PDF rendering errors:
#This avoids weird aperture settings and replaces them with more standardized values.
#(I'm not sure how photoplotters handle strange sizes).
#Fewer choices here gives more accurate mapping in the final Gerber files.
#units are in inches
use constant TOOL_SIZES => #add more as desired
(
#round or square pads (> 0) and drills (< 0):
    .010, -.001,  #tiny pads for SMD; dummy drill size (too small for practical use, but needed so StandardTool will use this entry)
    .031, -.014,  #used for vias
    .041, -.020,  #smallest non-filled plated hole
    .051, -.025,
    .056, -.029,  #useful for IC pins
    .070, -.033,
    .075, -.040,  #heavier leads
#    .090, -.043,  #NOTE: 600 dpi is not high enough resolution to reliably distinguish between .043" and .046", so choose 1 of the 2 here
    .100, -.046,
    .115, -.052,
    .130, -.061,
    .140, -.067,
    .150, -.079,
    .175, -.088,
    .190, -.093,
    .200, -.100,
    .220, -.110,
    .160, -.125,  #useful for mounting holes
#some additional pad sizes without holes (repeat a previous hole size if you just want the pad size):
    .090, -.040,  #want a .090 pad option, but use dummy hole size
    .065, -.040, #.065 x .065 rect pad
    .035, -.040, #.035 x .065 rect pad
#traces:
    .001,  #too thin for real traces; use only for board outlines
    .006,  #minimum real trace width; mainly used for text
    .008,  #mainly used for mid-sized text, not traces
    .010,  #minimum recommended trace width for low-current signals
    .012,
    .015,  #moderate low-voltage current
    .020,  #heavier trace for power, ground (even if a lighter one is adequate)
    .025,
    .030,  #heavy-current traces; be careful with these ones!
    .040,
    .050,
    .060,
    .080,
    .100,
    .120,
);
#Areas larger than the values below will be filled with parallel lines:
#This cuts down on the number of aperture sizes used.
#Set to 0 to always use an aperture or drill, regardless of size.
use constant { MAX_APERTURE => max((TOOL_SIZES)) + .004, MAX_DRILL => -min((TOOL_SIZES)) + .004 }; #max aperture and drill sizes (plus a little tolerance)
#DebugPrint(sprintf("using %d standard tool sizes: %s, max aper %.3f, max drill %.3f\n", scalar((TOOL_SIZES)), join(", ", (TOOL_SIZES)), MAX_APERTURE, MAX_DRILL), 1);

#NOTE: Compare the PDF to the original CAD file to check the accuracy of the PDF rendering and parsing!
#for example, the CAD software I used generated the following circles for holes:
#CAD hole size:   parsed PDF diameter:      error:
#  .014                .016                +.002
#  .020                .02267              +.00267
#  .025                .026                +.001
#  .029                .03167              +.00267
#  .033                .036                +.003
#  .040                .04267              +.00267
#This was usually ~ .002" - .003" too big compared to the hole as displayed in the CAD software.
#To compensate for PDF rendering errors (either during CAD Print function or PDF parsing logic), adjust the values below as needed.
#units are pixels; for example, a value of 2.4 at 600 dpi = .0004 inch, 2 at 600 dpi = .0033"
use constant
{
    HOLE_ADJUST => -0.004 * 600, #-2.6, #holes seemed to be slightly oversized (by .002" - .004"), so shrink them a little
    RNDPAD_ADJUST => -0.003 * 600, #-2, #-2.4, #round pads seemed to be slightly oversized, so shrink them a little
    SQRPAD_ADJUST => +0.001 * 600, #+.5, #square pads are sometimes too small by .00067, so bump them up a little
    RECTPAD_ADJUST => 0, #(pixels) rectangular pads seem to be okay? (not tested much)
    TRACE_ADJUST => 0, #(pixels) traces seemed to be okay?
    REDUCE_TOLERANCE => .001, #(inches) allow this much variation when reducing circles and rects
};

#Also, my CAD's Print function or the PDF print driver I used was a little off for circles, so define some additional adjustment values here:
#Values are added to X/Y coordinates; units are pixels; for example, a value of 1 at 600 dpi would be ~= .002 inch
use constant
{
    CIRCLE_ADJUST_MINX => 0,
    CIRCLE_ADJUST_MINY => -0.001 * 600, #-1, #circles were a little too high, so nudge them a little lower
    CIRCLE_ADJUST_MAXX => +0.001 * 600, #+1, #circles were a little too far to the left, so nudge them a little to the right
    CIRCLE_ADJUST_MAXY => 0,
    SUBST_CIRCLE_CLIPRECT => FALSE, #generate circle and substitute for clip rects (to compensate for the way some CAD software draws circles)
    WANT_CLIPRECT => TRUE, #FALSE, #AI doesn't need clip rect at all? should be on normally?
    RECT_COMPLETION => FALSE, #TRUE, #fill in 4th side of rect when 3 sides found
};

#allow .012 clearance around pads for solder mask:
#This value effectively adjusts pad sizes in the TOOL_SIZES list above (only for solder mask layers).
use constant SOLDER_MARGIN => +.012; #units are inches

#line join/cap styles:
use constant
{
    CAP_NONE => 0, #butt (none); line is exact length
    CAP_ROUND => 1, #round cap/join; line overhangs by a semi-circle at either end
    CAP_SQUARE => 2, #square cap/join; line overhangs by a half square on either end
    CAP_OVERRIDE => FALSE, #cap style overrides drawing logic
};
    
#number of elements in each shape type:
use constant
{
    RECT_SHAPELEN => 6, #x0, y0, x1, y1, count, "rect" (start, end corners)
    LINE_SHAPELEN => 6, #x0, y0, x1, y1, count, "line" (line seg)
    CURVE_SHAPELEN => 10, #xstart, ystart, x0, y0, x1, y1, xend, yend, count, "curve" (bezier 2 points)
    CIRCLE_SHAPELEN => 5, #x, y, 5, count, "circle" (center + radius)
};
#const my %SHAPELEN =
#Readonly my %SHAPELEN =>
our %SHAPELEN =
(
    rect => RECT_SHAPELEN,
    line => LINE_SHAPELEN,
    curve => CURVE_SHAPELEN,
    circle => CIRCLE_SHAPELEN,
);

#panelization:
#This will repeat the entire body the number of times indicated along the X or Y axes (files grow accordingly).
#Display elements that overhang PCB boundary can be squashed or left as-is (typically text or other silk screen markings).
#Set "overhangs" TRUE to allow overhangs, FALSE to truncate them.
#xpad and ypad allow margins to be added around outer edge of panelized PCB.
use constant PANELIZE => {'x' => 1, 'y' => 1, 'xpad' => 0, 'ypad' => 0, 'overhangs' => TRUE}; #number of times to repeat in X and Y directions

# Set this to 1 if you need TurboCAD support.
#$turboCAD = FALSE; #is this still needed as an option?

#CIRCAD pad generation uses an appropriate aperture, then moves it (stroke) "a little" - we use this to find pads and distinguish them from PCB holes. 
use constant PAD_STROKE => 0.3; #0.0005 * 600; #units are pixels
#convert very short traces to pads or holes:
use constant TRACE_MINLEN => .001; #units are inches
#use constant ALWAYS_XY => TRUE; #FALSE; #force XY even if X or Y doesn't change; NOTE: needs to be TRUE for all pads to show in FlatCAM and ViewPlot
use constant REMOVE_POLARITY => FALSE; #TRUE; #set to remove subtractive (negative) polarity; NOTE: must be FALSE for ground planes

#PDF uses "points", each point = 1/72 inch
#combined with a PDF scale factor of .12, this gives 600 dpi resolution (1/72 * .12 = 600 dpi)
use constant INCHES_PER_POINT => 1/72; #0.0138888889; #multiply point-size by this to get inches

# The precision used when computing a bezier curve. Higher numbers are more precise but slower (and generate larger files).
#$bezierPrecision = 100;
use constant BEZIER_PRECISION => 36; #100; #use const; reduced for faster rendering (mainly used for silk screen and thermal pads)

# Ground planes and silk screen or larger copper rectangles or circles are filled line-by-line using this resolution.
use constant FILL_WIDTH => .01; #fill at most 0.01 inch at a time

# The max number of characters to read into memory
use constant MAX_BYTES => 10 * M; #bumped up to 10 MB, use const

use constant DUP_DRILL1 => TRUE; #FALSE; #kludge: ViewPlot doesn't load drill files that are too small so duplicate first tool

my $runtime = time(); #Time::HiRes::gettimeofday(); #measure my execution time

print STDERR "Loaded config settings from '${\(__FILE__)}'.\n";
1; #last value must be truthful to indicate successful load


#############################################################################################
#junk/experiment:

#use Package::Constants;
#use Exporter qw(import); #https://perldoc.perl.org/Exporter.html

#my $caller = "pdf2gerb::";

#sub cfg
#{
#    my $proto = shift;
#    my $class = ref($proto) || $proto;
#    my $settings =
#    {
#        $WANT_DEBUG => 990, #10; #level of debug wanted; higher == more, lower == less, 0 == none
#    };
#    bless($settings, $class);
#    return $settings;
#}

#use constant HELLO => "hi there2"; #"main::HELLO" => "hi there";
#use constant GOODBYE => 14; #"main::GOODBYE" => 12;

#print STDERR "read cfg file\n";

#our @EXPORT_OK = Package::Constants->list(__PACKAGE__); #https://www.perlmonks.org/?node_id=1072691; NOTE: "_OK" skips short/common names

#print STDERR scalar(@EXPORT_OK) . " consts exported:\n";
#foreach(@EXPORT_OK) { print STDERR "$_\n"; }
#my $val = main::thing("xyz");
#print STDERR "caller gave me $val\n";
#foreach my $arg (@ARGV) { print STDERR "arg $arg\n"; }

Download Details:

Author: swannman
Source Code: https://github.com/swannman/pdf2gerb

License: GPL-3.0 license

#perl 

How to Detect the Battery Status with HTML, CSS & JavaScript

In this guide, we will learn how to detect the battery status with HTML, CSS & JavaScript. To detect the battery status with HTML, CSS & JavaScript. You need to create three Files HTML, CSS & JavaScript 

1: First, create an HTML file

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Detect Battery Status</title>
    <!-- Google Fonts -->
    <link
      href="https://fonts.googleapis.com/css2?family=Roboto+Mono:wght@400;500&display=swap"
      rel="stylesheet"
    />
    <!-- Stylesheet -->
    <link rel="stylesheet" href="style.css" />
  </head>
  <body>
    <div class="container">
      <div id="battery">
        <div id="charge"></div>
        <div id="charge-level"></div>
      </div>
      <div id="charging-time"></div>
    </div>
    <script src="script.js"></script>
  </body>
</html>

 

2: Second, create a CSS file

 

* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
  font-family: "Roboto Mono", monospace;
}
.container {
  position: absolute;
  transform: translate(-50%, -50%);
  top: 50%;
  left: 50%;
}
#battery {
  box-sizing: content-box;
  height: 7.8em;
  width: 17.5em;
  border: 0.6em solid #246aed;
  margin: auto;
  border-radius: 0.6em;
  position: relative;
  display: grid;
  place-items: center;
}
#battery:before {
  position: absolute;
  content: "";
  height: 5em;
  width: 1.1em;
  background-color: #246aed;
  margin: auto;
  top: 0;
  bottom: 0;
  right: -1.6em;
  border-radius: 0 0.3em 0.3em 0;
}
#charge {
  position: absolute;
  height: 6.5em;
  width: 16.25em;
  background-color: #246aed;
  top: 0.6em;
  left: 0.6em;
}
#charge-level {
  position: absolute;
  font-size: 3em;
  font-weight: 500;
}
#charging-time {
  text-align: center;
  font-size: 1.7em;
  margin-top: 1.4em;
}
.active {
  animation: charge-animation 3s infinite linear;
}
@keyframes charge-animation {
  0% {
    width: 0;
  }
  100% {
    width: 16.25em;
  }
}

 

3: Last, create a JavaScript file

 

const chargeLevel = document.getElementById("charge-level");
const charge = document.getElementById("charge");
const chargingTimeRef = document.getElementById("charging-time");

window.onload = () => {
  //For browsers that don't support the battery status API
  if (!navigator.getBattery) {
    alert("Battery Status Api Is Not Supported In Your Browser");
    return false;
  }
};

navigator.getBattery().then((battery) => {
  function updateAllBatteryInfo() {
    updateChargingInfo();
    updateLevelInfo();
  }
  updateAllBatteryInfo();

  //When the charging status changes
  battery.addEventListener("chargingchange", () => {
    updateAllBatteryInfo();
  });

  //When the Battery Levvel Changes
  battery.addEventListener("levelchange", () => {
    updateAllBatteryInfo();
  });

  function updateChargingInfo() {
    if (battery.charging) {
      charge.classList.add("active");
      chargingTimeRef.innerText = "";
    } else {
      charge.classList.remove("active");

      //Display time left to discharge only when it is a integer value i.e not infinity
      if (parseInt(battery.dischargingTime)) {
        let hr = parseInt(battery.dischargingTime / 3600);
        let min = parseInt(battery.dischargingTime / 60 - hr * 60);
        chargingTimeRef.innerText = `${hr}hr ${min}mins remaining`;
      }
    }
  }

  //Updating battery level
  function updateLevelInfo() {
    let batteryLevel = `${parseInt(battery.level * 100)}%`;
    charge.style.width = batteryLevel;
    chargeLevel.textContent = batteryLevel;
  }
});

You have now successfully created a battery health detection app using HTML, CSS & JavaScript

#html #css  #javascript 

Jade Bird

Jade Bird

1653032764

How to Detect Battery Status with HTML, CSS and JavaScript

Detect Battery Status With Javascript | Detect Charge Level & Charging Status

Detect battery charge level, battery charging status, battery discharge time using the Battery Status API with HTML, CSS and Javascript.

In today’s tutorial, we will learn how to detect the battery status. To build this project, we need HTML, CSS and Javascript. 

We would be making use of Battery Status API in this project. You can read more about the Battery Status API here. Also, read about browser compatibility before you implement it in real-world projects.

In this project, we will detect:

  1. What is the battery charge level?
  2. Is the battery charging?
  3. If No, how much time until the battery discharges completely.

Project Folder Structure:

Before we start coding, let us create the project folder structure. We begin by creating a project folder called – ‘Detect Battery Status’. Inside this folder, we have three files. These files are – index.html, style.css and script.js. The first file is the HTML document. Next, we have the stylesheet. And the final file is the script file.

HTML:

We begin with the HTML code. First, copy the code below and paste it into your HTML document. The HTML code creates elements for the built layout of our project.

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Detect Battery Status</title>
    <!-- Google Fonts -->
    <link
      href="https://fonts.googleapis.com/css2?family=Roboto+Mono:wght@400;500&display=swap"
      rel="stylesheet"
    />
    <!-- Stylesheet -->
    <link rel="stylesheet" href="style.css" />
  </head>
  <body>
    <div class="container">
      <div id="battery">
        <div id="charge"></div>
        <div id="charge-level"></div>
      </div>
      <div id="charging-time"></div>
    </div>
    <script src="script.js"></script>
  </body>
</html>

CSS:

Next, we need to style and position these elements. To do this, we use CSS. Now copy the code provided to you below and paste it into your stylesheet.

* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
  font-family: "Roboto Mono", monospace;
}
.container {
  position: absolute;
  transform: translate(-50%, -50%);
  top: 50%;
  left: 50%;
}
#battery {
  box-sizing: content-box;
  height: 7.8em;
  width: 17.5em;
  border: 0.6em solid #246aed;
  margin: auto;
  border-radius: 0.6em;
  position: relative;
  display: grid;
  place-items: center;
}
#battery:before {
  position: absolute;
  content: "";
  height: 5em;
  width: 1.1em;
  background-color: #246aed;
  margin: auto;
  top: 0;
  bottom: 0;
  right: -1.6em;
  border-radius: 0 0.3em 0.3em 0;
}
#charge {
  position: absolute;
  height: 6.5em;
  width: 16.25em;
  background-color: #246aed;
  top: 0.6em;
  left: 0.6em;
}
#charge-level {
  position: absolute;
  font-size: 3em;
  font-weight: 500;
}
#charging-time {
  text-align: center;
  font-size: 1.7em;
  margin-top: 1.4em;
}
.active {
  animation: charge-animation 3s infinite linear;
}
@keyframes charge-animation {
  0% {
    width: 0;
  }
  100% {
    width: 16.25em;
  }
}

Javascript:

We finally add functionality to this code. To add logic, we use Javascript. Once again, copy the code provided to you below and paste it into your script file.

const chargeLevel = document.getElementById("charge-level");
const charge = document.getElementById("charge");
const chargingTimeRef = document.getElementById("charging-time");

window.onload = () => {
  //For browsers that don't support the battery status API
  if (!navigator.getBattery) {
    alert("Battery Status Api Is Not Supported In Your Browser");
    return false;
  }
};

navigator.getBattery().then((battery) => {
  function updateAllBatteryInfo() {
    updateChargingInfo();
    updateLevelInfo();
  }
  updateAllBatteryInfo();

  //When the charging status changes
  battery.addEventListener("chargingchange", () => {
    updateAllBatteryInfo();
  });

  //When the Battery Levvel Changes
  battery.addEventListener("levelchange", () => {
    updateAllBatteryInfo();
  });

  function updateChargingInfo() {
    if (battery.charging) {
      charge.classList.add("active");
      chargingTimeRef.innerText = "";
    } else {
      charge.classList.remove("active");

      //Display time left to discharge only when it is a integer value i.e not infinity
      if (parseInt(battery.dischargingTime)) {
        let hr = parseInt(battery.dischargingTime / 3600);
        let min = parseInt(battery.dischargingTime / 60 - hr * 60);
        chargingTimeRef.innerText = `${hr}hr ${min}mins remaining`;
      }
    }
  }

  //Updating battery level
  function updateLevelInfo() {
    let batteryLevel = `${parseInt(battery.level * 100)}%`;
    charge.style.width = batteryLevel;
    chargeLevel.textContent = batteryLevel;
  }
});

That’s it for this tutorial. If you have any issues while creating this code you can download the source code by clicking on the ‘Download Code’ button below. Also, I would love to hear from you, so feel free to drop your queries and suggestions in the comments below.
Happy Coding!!

📁 Download Source Code : 
https://www.codingartistweb.com

#html #css #javascript

Como detectar o status da bateria com HTML, CSS e JavaScript

Neste guia, aprenderemos como detectar o status da bateria com HTML, CSS e JavaScript. Para detectar o status da bateria com HTML, CSS e JavaScript. Você precisa criar três arquivos HTML, CSS e JavaScript 

1: Primeiro, crie um arquivo HTML

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Detect Battery Status</title>
    <!-- Google Fonts -->
    <link
      href="https://fonts.googleapis.com/css2?family=Roboto+Mono:wght@400;500&display=swap"
      rel="stylesheet"
    />
    <!-- Stylesheet -->
    <link rel="stylesheet" href="style.css" />
  </head>
  <body>
    <div class="container">
      <div id="battery">
        <div id="charge"></div>
        <div id="charge-level"></div>
      </div>
      <div id="charging-time"></div>
    </div>
    <script src="script.js"></script>
  </body>
</html>

 

2: Em segundo lugar, crie um arquivo CSS

 

* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
  font-family: "Roboto Mono", monospace;
}
.container {
  position: absolute;
  transform: translate(-50%, -50%);
  top: 50%;
  left: 50%;
}
#battery {
  box-sizing: content-box;
  height: 7.8em;
  width: 17.5em;
  border: 0.6em solid #246aed;
  margin: auto;
  border-radius: 0.6em;
  position: relative;
  display: grid;
  place-items: center;
}
#battery:before {
  position: absolute;
  content: "";
  height: 5em;
  width: 1.1em;
  background-color: #246aed;
  margin: auto;
  top: 0;
  bottom: 0;
  right: -1.6em;
  border-radius: 0 0.3em 0.3em 0;
}
#charge {
  position: absolute;
  height: 6.5em;
  width: 16.25em;
  background-color: #246aed;
  top: 0.6em;
  left: 0.6em;
}
#charge-level {
  position: absolute;
  font-size: 3em;
  font-weight: 500;
}
#charging-time {
  text-align: center;
  font-size: 1.7em;
  margin-top: 1.4em;
}
.active {
  animation: charge-animation 3s infinite linear;
}
@keyframes charge-animation {
  0% {
    width: 0;
  }
  100% {
    width: 16.25em;
  }
}

 

3: Por último, crie um arquivo JavaScript

 

const chargeLevel = document.getElementById("charge-level");
const charge = document.getElementById("charge");
const chargingTimeRef = document.getElementById("charging-time");

window.onload = () => {
  //For browsers that don't support the battery status API
  if (!navigator.getBattery) {
    alert("Battery Status Api Is Not Supported In Your Browser");
    return false;
  }
};

navigator.getBattery().then((battery) => {
  function updateAllBatteryInfo() {
    updateChargingInfo();
    updateLevelInfo();
  }
  updateAllBatteryInfo();

  //When the charging status changes
  battery.addEventListener("chargingchange", () => {
    updateAllBatteryInfo();
  });

  //When the Battery Levvel Changes
  battery.addEventListener("levelchange", () => {
    updateAllBatteryInfo();
  });

  function updateChargingInfo() {
    if (battery.charging) {
      charge.classList.add("active");
      chargingTimeRef.innerText = "";
    } else {
      charge.classList.remove("active");

      //Display time left to discharge only when it is a integer value i.e not infinity
      if (parseInt(battery.dischargingTime)) {
        let hr = parseInt(battery.dischargingTime / 3600);
        let min = parseInt(battery.dischargingTime / 60 - hr * 60);
        chargingTimeRef.innerText = `${hr}hr ${min}mins remaining`;
      }
    }
  }

  //Updating battery level
  function updateLevelInfo() {
    let batteryLevel = `${parseInt(battery.level * 100)}%`;
    charge.style.width = batteryLevel;
    chargeLevel.textContent = batteryLevel;
  }
});

Você criou com sucesso um aplicativo de detecção de integridade da bateria usando HTML, CSS e JavaScript

Comment détecter l'état de la batterie avec HTML, CSS et JavaScript

Dans ce guide, nous apprendrons comment détecter l'état de la batterie avec HTML, CSS et JavaScript. Pour détecter l'état de la batterie avec HTML, CSS et JavaScript. Vous devez créer trois fichiers HTML, CSS et JavaScript 

1 : Tout d'abord, créez un fichier HTML

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Detect Battery Status</title>
    <!-- Google Fonts -->
    <link
      href="https://fonts.googleapis.com/css2?family=Roboto+Mono:wght@400;500&display=swap"
      rel="stylesheet"
    />
    <!-- Stylesheet -->
    <link rel="stylesheet" href="style.css" />
  </head>
  <body>
    <div class="container">
      <div id="battery">
        <div id="charge"></div>
        <div id="charge-level"></div>
      </div>
      <div id="charging-time"></div>
    </div>
    <script src="script.js"></script>
  </body>
</html>

 

2 : Deuxièmement, créez un fichier CSS

 

* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
  font-family: "Roboto Mono", monospace;
}
.container {
  position: absolute;
  transform: translate(-50%, -50%);
  top: 50%;
  left: 50%;
}
#battery {
  box-sizing: content-box;
  height: 7.8em;
  width: 17.5em;
  border: 0.6em solid #246aed;
  margin: auto;
  border-radius: 0.6em;
  position: relative;
  display: grid;
  place-items: center;
}
#battery:before {
  position: absolute;
  content: "";
  height: 5em;
  width: 1.1em;
  background-color: #246aed;
  margin: auto;
  top: 0;
  bottom: 0;
  right: -1.6em;
  border-radius: 0 0.3em 0.3em 0;
}
#charge {
  position: absolute;
  height: 6.5em;
  width: 16.25em;
  background-color: #246aed;
  top: 0.6em;
  left: 0.6em;
}
#charge-level {
  position: absolute;
  font-size: 3em;
  font-weight: 500;
}
#charging-time {
  text-align: center;
  font-size: 1.7em;
  margin-top: 1.4em;
}
.active {
  animation: charge-animation 3s infinite linear;
}
@keyframes charge-animation {
  0% {
    width: 0;
  }
  100% {
    width: 16.25em;
  }
}

 

3 : Enfin, créez un fichier JavaScript

 

const chargeLevel = document.getElementById("charge-level");
const charge = document.getElementById("charge");
const chargingTimeRef = document.getElementById("charging-time");

window.onload = () => {
  //For browsers that don't support the battery status API
  if (!navigator.getBattery) {
    alert("Battery Status Api Is Not Supported In Your Browser");
    return false;
  }
};

navigator.getBattery().then((battery) => {
  function updateAllBatteryInfo() {
    updateChargingInfo();
    updateLevelInfo();
  }
  updateAllBatteryInfo();

  //When the charging status changes
  battery.addEventListener("chargingchange", () => {
    updateAllBatteryInfo();
  });

  //When the Battery Levvel Changes
  battery.addEventListener("levelchange", () => {
    updateAllBatteryInfo();
  });

  function updateChargingInfo() {
    if (battery.charging) {
      charge.classList.add("active");
      chargingTimeRef.innerText = "";
    } else {
      charge.classList.remove("active");

      //Display time left to discharge only when it is a integer value i.e not infinity
      if (parseInt(battery.dischargingTime)) {
        let hr = parseInt(battery.dischargingTime / 3600);
        let min = parseInt(battery.dischargingTime / 60 - hr * 60);
        chargingTimeRef.innerText = `${hr}hr ${min}mins remaining`;
      }
    }
  }

  //Updating battery level
  function updateLevelInfo() {
    let batteryLevel = `${parseInt(battery.level * 100)}%`;
    charge.style.width = batteryLevel;
    chargeLevel.textContent = batteryLevel;
  }
});

Vous avez maintenant créé avec succès une application de détection de la santé de la batterie en utilisant HTML, CSS et JavaScript