Building an Autocomplete Form Element with Atlas Search and JavaScript

When you’re developing a web application, a quality user experience can make or break your application. A common application feature is to allow users to enter text into a search bar to find a specific piece of information. Rather than having the user enter information and hope it’s valid, you can help your users find what they are looking for by offering autocomplete suggestions as they type.

So what could go wrong?

If your users are like me, they’ll make multiple spelling mistakes for every one word of text. If you’re creating an autocomplete field using regular expressions on your data, programming to account for misspellings and fat fingers is tough!

In this tutorial, we’re going to see how to create a simple web application that surfaces autocomplete suggestions to the user. These suggestions can be easily created using the full-text search features available in Atlas Search.

To get a better idea of what we want to accomplish, have a look at the following animated image:

In the above image you’ll notice that I not only made spelling mistakes, but I also made use of a word that appeared anywhere within the field for any document in a collection.

We’ll skip the basics of configuring Node.js or MongoDB and assume that you already have a few things installed, configured, and ready to go:

• MongoDB Atlas with an M0 cluster or better, with user and network safe-list configurations established
• Node.js installed and configured
• A food database with a recipes collection established

We’ll be using Atlas Search within MongoDB Atlas. To follow this tutorial, the recipes collection (within the food database) will expect documents that look like this:

{
    "_id": "5e5421451c9d440000e7ca13",
    "name": "chocolate chip cookies",
    "ingredients": [
        "sugar",
        "flour",
        "chocolate"
    ]
}

Make sure to create many documents within your recipes collection, some of which with similar names. In my example, I used “grilled cheese”, “five cheese lasagna”, and “baked salmon”.

Configuring MongoDB Atlas with a Search Index

Before we start creating a frontend or backend, we need to prepare our collection for search by creating a special search index.

Within the Collections tab of your cluster, find the recipes collection and then choose the Search tab.

You probably won’t have an Atlas Search index created yet, so we’ll need to create one. By default, Atlas Search dynamically maps every field in a collection. That means every field in our document will be checked against our search terms. This is great for growing collections where the schema may evolve, and you want to search through many different fields. However it can be resource intensive, as well. For our app, we actually just want to search by one particular field, the “name” field in our recipe documents. To do that, choose “Create Search Index” and change the code to the following:

{
    "mappings": {
        "dynamic": false,
        "fields": {
            "name": [
                {
                    "foldDiacritics": false,
                    "maxGrams": 7,
                    "minGrams": 3,
                    "tokenization": "edgeGram",
                    "type": "autocomplete"
                }
            ]
        }
    }
}

In the above example, we’re creating an index on the name field within our documents using an autocomplete index. Any fields that aren’t explicitly mapped, like the ingredients array, will not be searched.

#javascript #programming

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Building an Autocomplete Form Element with Atlas Search and JavaScript

Learn how to use the autocomplete operator in MongoDB Atlas Search to build a frontend form element that suggests data to the user.

Subscribe to MongoDB ►►► https://bit.ly/3bpg1Z1

#javascript #atlas search #mongodb

Codeigniter 4 Autocomplete Textbox From Database using Typeahead JS - Tuts Make

Autocomplete textbox search from database in codeigniter 4 using jQuery Typeahead js. In this tutorial, you will learn how to implement an autocomplete search or textbox search with database using jquery typehead js example.

This tutorial will show you step by step how to implement autocomplete search from database in codeigniter 4 app using typeahead js.

Autocomplete Textbox Search using jQuery typeahead Js From Database in Codeigniter

• Download Codeigniter Latest
• Basic Configurations
• Create Table in Database
• Setup Database Credentials
• Create Controller
• Create View
• Create Route
• Start Development Server

https://www.tutsmake.com/codeigniter-4-autocomplete-textbox-from-database-using-typeahead-js/

#codeigniter 4 ajax autocomplete search #codeigniter 4 ajax autocomplete search from database #autocomplete textbox in jquery example using database in codeigniter #search data from database in codeigniter 4 using ajax #how to search and display data from database in codeigniter 4 using ajax #autocomplete in codeigniter 4 using typeahead js

Building an Autocomplete Form Element with Atlas Search and JavaScript

When you’re developing a web application, a quality user experience can make or break your application. A common application feature is to allow users to enter text into a search bar to find a specific piece of information. Rather than having the user enter information and hope it’s valid, you can help your users find what they are looking for by offering autocomplete suggestions as they type.

So what could go wrong?

If your users are like me, they’ll make multiple spelling mistakes for every one word of text. If you’re creating an autocomplete field using regular expressions on your data, programming to account for misspellings and fat fingers is tough!

In this tutorial, we’re going to see how to create a simple web application that surfaces autocomplete suggestions to the user. These suggestions can be easily created using the full-text search features available in Atlas Search.

To get a better idea of what we want to accomplish, have a look at the following animated image:

In the above image you’ll notice that I not only made spelling mistakes, but I also made use of a word that appeared anywhere within the field for any document in a collection.

We’ll skip the basics of configuring Node.js or MongoDB and assume that you already have a few things installed, configured, and ready to go:

• MongoDB Atlas with an M0 cluster or better, with user and network safe-list configurations established
• Node.js installed and configured
• A food database with a recipes collection established

We’ll be using Atlas Search within MongoDB Atlas. To follow this tutorial, the recipes collection (within the food database) will expect documents that look like this:

{
    "_id": "5e5421451c9d440000e7ca13",
    "name": "chocolate chip cookies",
    "ingredients": [
        "sugar",
        "flour",
        "chocolate"
    ]
}

Make sure to create many documents within your recipes collection, some of which with similar names. In my example, I used “grilled cheese”, “five cheese lasagna”, and “baked salmon”.

Configuring MongoDB Atlas with a Search Index

Before we start creating a frontend or backend, we need to prepare our collection for search by creating a special search index.

Within the Collections tab of your cluster, find the recipes collection and then choose the Search tab.

You probably won’t have an Atlas Search index created yet, so we’ll need to create one. By default, Atlas Search dynamically maps every field in a collection. That means every field in our document will be checked against our search terms. This is great for growing collections where the schema may evolve, and you want to search through many different fields. However it can be resource intensive, as well. For our app, we actually just want to search by one particular field, the “name” field in our recipe documents. To do that, choose “Create Search Index” and change the code to the following:

{
    "mappings": {
        "dynamic": false,
        "fields": {
            "name": [
                {
                    "foldDiacritics": false,
                    "maxGrams": 7,
                    "minGrams": 3,
                    "tokenization": "edgeGram",
                    "type": "autocomplete"
                }
            ]
        }
    }
}

In the above example, we’re creating an index on the name field within our documents using an autocomplete index. Any fields that aren’t explicitly mapped, like the ingredients array, will not be searched.

#javascript #programming

What is JavaScript - Stackfindover - Blog

Who invented JavaScript, how it works, as we have given information about Programming language in our previous article ( What is PHP ), but today we will talk about what is JavaScript, why JavaScript is used The Answers to all such questions and much other information about JavaScript, you are going to get here today. Hope this information will work for you.

Who invented JavaScript?

JavaScript language was invented by Brendan Eich in 1995. JavaScript is inspired by Java Programming Language. The first name of JavaScript was Mocha which was named by Marc Andreessen, Marc Andreessen is the founder of Netscape and in the same year Mocha was renamed LiveScript, and later in December 1995, it was renamed JavaScript which is still in trend.

What is JavaScript?

JavaScript is a client-side scripting language used with HTML (Hypertext Markup Language). JavaScript is an Interpreted / Oriented language called JS in programming language JavaScript code can be run on any normal web browser. To run the code of JavaScript, we have to enable JavaScript of Web Browser. But some web browsers already have JavaScript enabled.

Today almost all websites are using it as web technology, mind is that there is maximum scope in JavaScript in the coming time, so if you want to become a programmer, then you can be very beneficial to learn JavaScript.

JavaScript Hello World Program

In JavaScript, ‘document.write‘ is used to represent a string on a browser.

<script type="text/javascript">
	document.write("Hello World!");
</script>

How to comment JavaScript code?

• For single line comment in JavaScript we have to use // (double slashes)
• For multiple line comments we have to use / * – – * /

<script type="text/javascript">

//single line comment

/* document.write("Hello"); */

</script>

Advantages and Disadvantages of JavaScript

#javascript #javascript code #javascript hello world #what is javascript #who invented javascript

Hire Dedicated JavaScript Developers -Hire JavaScript Developers

It is said that a digital resource a business has must be interactive in nature, so the website or the business app should be interactive. How do you make the app interactive? With the use of JavaScript.

Does your business need an interactive website or app?

Hire Dedicated JavaScript Developer from WebClues Infotech as the developer we offer is highly skilled and expert in what they do. Our developers are collaborative in nature and work with complete transparency with the customers.

The technology used to develop the overall app by the developers from WebClues Infotech is at par with the latest available technology.

Get your business app with JavaScript

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Book Free Interview: https://bit.ly/3dDShFg

#hire dedicated javascript developers #hire javascript developers #top javascript developers for hire #hire javascript developer #hire a freelancer for javascript developer #hire the best javascript developers