What is javascript get element by name?

What is javascript get element by name? JavaScript Get Element By Name can be used to find an HTML DOM object. This function would return the first node that matches the given selector or null if nothing was found.

Introduction to JavaScript get Element By Name method

The JavaScript getElementByName() method would return the first node that matches the given selector or null if nothing was found. This function is used to find an HTML DOM object by its name and can be used for styling purposes in CSS files as well as other purposes such as ajax requests.

It’s worth noting that this method should not be used with remote XML documents like XHTML because these nodes are identified from their name attribute rather than their tag name, which causes problems when using it on non-XML document types.

There are two ways of performing a getElementsByName search:
var x = document.getElementsByName(“tag”); //returns all child elements matching “tag” var x = document.getElementsByName(“tag”); //returns all child elements matching “tag”

The first way of doing this will return every element that has a name attribute with the given text, whereas the second method will only find those tags which have the same attributes as well as tag names containing what is typed in to match them.
It’s worth noting that while getElementById() returns one node when it succeeds, getElementsByName() will always return an array-like object with zero or more items if found. The function also accepts wildcards and can be used to target multiple nodes at once and is case insensitive, so you don’t need to worry about capitalization. For example:

var x = document.getElementsByName(“*Option”);
This will return all elements in the document with a name attribute that starts with “option.”

x[0] // returns first matching element found by getElementById() or index of array-like object returned from getElementsByName(); if nothing is found, this will be undefined

Lets look the code to understand the concept

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title>JavaScript get Element By Name Demo</title>
</head>
<body>
    <p>Please rate the service:</p>
    <p>
        <input type="radio" name="value" > value 1
        <input type="radio" name="value" > value 2
        <input type="radio" name="value" > value 3
        <input type="radio" name="value" > value 4
        <input type="radio" name="value" > value 5
    </p>
    <p>
        <button id="btn">Submit</button>
    </p>
    <script>
        let btn = document.getElementById('btn');

        btn.addEventListener('click', () => {
            let values = document.getElementsByName('value');
            values .forEach((value) => {
                if (values.checked) {
                   do somthing
                }
            })
        });
    </script>
</body>
</html>

JavaScript getElementsByName vs getElementById()

JavaScript get Elements By Name vs getElementById(): JavaScript provide two different functions for locating DOM elements by name. The function, which is called in the code snippet above, returns all nodes with the given name attribute.


var x = document.getElementsByName(“*Option”);
This will return all elements in the document with a name attribute that starts with “option” x[0] // returns first matching element found by getElementById() or index of array-like object returned from getElementsByName(); if nothing is found, this will be undefined

JavaScript provides two different functions for locating DOM elements by name. The function, which is called in the code snippet above, returns all nodes with the given name attribute.
var x = document.getElementsByName(“*Option”);


This will return all elements in the document with a name attribute that starts with “option” *x[0] // returns first matching element found by getElementById() or index of array-like object returned from getElementsByName(); if nothing is found, this will be undefined\n

JavaScript getElementById(): This function returns the first node with a given ID attribute.
var x = document.getElementsById(“option”);


This will return the element with an ID of “option,” which is most likely a paragraph tag or other HTML structure in your page, such as div tags. returns first matching element found by getElementById() function.


It is not possible to use this function on all elements because it only searches for those that have been given an ID attribute.

Therefore, although both functions are designed for locating DOM elements based on their ID, getElementById() is restricted to locating only those with a defined ID.


Conclusion paragraph: JavaScript Get Element by Name is a command that will help you find an element on the page. It’s important to note that this only works with HTML elements and not objects or arrays. For example, if we want to get the tag in our code above called “p1” we would use document .getElementById(“p1”), which returns the DOM object of our desired div.

Aslo read : What is JavaScript Dom

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