Günter Scholtz

Günter Scholtz

1606087440

How To Populate DropDown List With Options From Array Using Javascript [ with source code ]

In This Javascript Tutorial we will See How To Add A Options To Select And Set Attribute To Option From Array Using For Loop In JS And Netbeans Editor .

Subscribe : https://www.youtube.com/channel/UCS3W5vFugqi6QcsoAIHcMpw

Project Source Code:


<!DOCTYPE html>
<html>
    <head>
        <title>Add Option From Array</title>
        <meta charset="windows-1252">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
    </head>
    <body>

        <select id="select">
            <option value="default">default</option>
        </select>
        
        <script>
            
            var select = document.getElementById("select"),
                     arr = ["html","css","java","javascript","php","c++","node.js","ASP","JSP","SQL"];
             
             for(var i = 0; i < arr.length; i++)
             {
                 var option = document.createElement("OPTION"),
                     txt = document.createTextNode(arr[i]);
                 option.appendChild(txt);
                 option.setAttribute("value",arr[i]);
                 select.insertBefore(option,select.lastChild);
             }
             
        </script>

    </body>
</html>

#js #javascript

What is GEEK

Buddha Community

How To Populate DropDown List With Options From Array Using Javascript [ with source code ]

I am Developer

1597487833

Country State City Drop Down List using Ajax in Laravel

Here, i will show you how to create dynamic depedent country state city dropdown list using ajax in laravel.

Country State City Dropdown List using Ajax in php Laravel

Follow Below given steps to create dynamic dependent country state city dropdown list with jQuery ajax in laravel:

  • Step 1: Install Laravel App
  • Step 2: Add Database Details
  • Step 3: Create Country State City Migration and Model File
  • Step 4: Add Routes For Country State City
  • Step 5: Create Controller For Fetch Country State City
  • Step 6: Create Blade File For Show Dependent Country State City in Dropdown
  • Step 7: Run Development Server

https://www.tutsmake.com/ajax-country-state-city-dropdown-in-laravel/

#how to create dynamic dropdown list using laravel dynamic select box in laravel #laravel-country state city package #laravel country state city drop down #dynamic dropdown country city state list in laravel using ajax #country state city dropdown list using ajax in php laravel #country state city dropdown list using ajax in laravel demo

Lowa Alice

Lowa Alice

1624388400

JavaScript Arrays Tutorial. DO NOT MISS!!!

Learn JavaScript Arrays

📺 The video in this post was made by Programming with Mosh
The origin of the article: https://www.youtube.com/watch?v=oigfaZ5ApsM&list=PLTjRvDozrdlxEIuOBZkMAK5uiqp8rHUax&index=4
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Thanks for visiting and watching! Please don’t forget to leave a like, comment and share!

#arrays #javascript #javascript arrays #javascript arrays tutorial

Tyrique Littel

Tyrique Littel

1604008800

Static Code Analysis: What It Is? How to Use It?

Static code analysis refers to the technique of approximating the runtime behavior of a program. In other words, it is the process of predicting the output of a program without actually executing it.

Lately, however, the term “Static Code Analysis” is more commonly used to refer to one of the applications of this technique rather than the technique itself — program comprehension — understanding the program and detecting issues in it (anything from syntax errors to type mismatches, performance hogs likely bugs, security loopholes, etc.). This is the usage we’d be referring to throughout this post.

“The refinement of techniques for the prompt discovery of error serves as well as any other as a hallmark of what we mean by science.”

  • J. Robert Oppenheimer

Outline

We cover a lot of ground in this post. The aim is to build an understanding of static code analysis and to equip you with the basic theory, and the right tools so that you can write analyzers on your own.

We start our journey with laying down the essential parts of the pipeline which a compiler follows to understand what a piece of code does. We learn where to tap points in this pipeline to plug in our analyzers and extract meaningful information. In the latter half, we get our feet wet, and write four such static analyzers, completely from scratch, in Python.

Note that although the ideas here are discussed in light of Python, static code analyzers across all programming languages are carved out along similar lines. We chose Python because of the availability of an easy to use ast module, and wide adoption of the language itself.

How does it all work?

Before a computer can finally “understand” and execute a piece of code, it goes through a series of complicated transformations:

static analysis workflow

As you can see in the diagram (go ahead, zoom it!), the static analyzers feed on the output of these stages. To be able to better understand the static analysis techniques, let’s look at each of these steps in some more detail:

Scanning

The first thing that a compiler does when trying to understand a piece of code is to break it down into smaller chunks, also known as tokens. Tokens are akin to what words are in a language.

A token might consist of either a single character, like (, or literals (like integers, strings, e.g., 7, Bob, etc.), or reserved keywords of that language (e.g, def in Python). Characters which do not contribute towards the semantics of a program, like trailing whitespace, comments, etc. are often discarded by the scanner.

Python provides the tokenize module in its standard library to let you play around with tokens:

Python

1

import io

2

import tokenize

3

4

code = b"color = input('Enter your favourite color: ')"

5

6

for token in tokenize.tokenize(io.BytesIO(code).readline):

7

    print(token)

Python

1

TokenInfo(type=62 (ENCODING),  string='utf-8')

2

TokenInfo(type=1  (NAME),      string='color')

3

TokenInfo(type=54 (OP),        string='=')

4

TokenInfo(type=1  (NAME),      string='input')

5

TokenInfo(type=54 (OP),        string='(')

6

TokenInfo(type=3  (STRING),    string="'Enter your favourite color: '")

7

TokenInfo(type=54 (OP),        string=')')

8

TokenInfo(type=4  (NEWLINE),   string='')

9

TokenInfo(type=0  (ENDMARKER), string='')

(Note that for the sake of readability, I’ve omitted a few columns from the result above — metadata like starting index, ending index, a copy of the line on which a token occurs, etc.)

#code quality #code review #static analysis #static code analysis #code analysis #static analysis tools #code review tips #static code analyzer #static code analysis tool #static analyzer

Günter Scholtz

Günter Scholtz

1606087440

How To Populate DropDown List With Options From Array Using Javascript [ with source code ]

In This Javascript Tutorial we will See How To Add A Options To Select And Set Attribute To Option From Array Using For Loop In JS And Netbeans Editor .

Subscribe : https://www.youtube.com/channel/UCS3W5vFugqi6QcsoAIHcMpw

Project Source Code:


<!DOCTYPE html>
<html>
    <head>
        <title>Add Option From Array</title>
        <meta charset="windows-1252">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
    </head>
    <body>

        <select id="select">
            <option value="default">default</option>
        </select>
        
        <script>
            
            var select = document.getElementById("select"),
                     arr = ["html","css","java","javascript","php","c++","node.js","ASP","JSP","SQL"];
             
             for(var i = 0; i < arr.length; i++)
             {
                 var option = document.createElement("OPTION"),
                     txt = document.createTextNode(arr[i]);
                 option.appendChild(txt);
                 option.setAttribute("value",arr[i]);
                 select.insertBefore(option,select.lastChild);
             }
             
        </script>

    </body>
</html>

#js #javascript

Hertha Walsh

Hertha Walsh

1600871280

Increase Performance of React Applications Via Array JavaScript Methods

We know the array methods of javascript. We used it in simple programming, right? But today we will see how to use it in real life programming.

We will create a simple event management application in the react to add, update, and delete an event. I have already created an application. You guys just have to clone it and run it then we will see how to increase the performance of it by implementing array methods in it.

Clone the following repository then you will have a simple event management application. Later on, step by step, we will add code in it to see how array methods will help to increase the performance.

#react #react-native #reactjs #javascript #arrays #javascript-arrays #programming #coding