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JavaScript JavaScript and the DOM (Retiring) Making Changes to the DOM Modifying Elements

Posted by Arvind Krishna
Arvind Krishna
3,550 Points

How do you select Tag and ID together and assign it to the variable?

How do you select Tag and ID together and assign it to the variable?

app.js 
var inputValue = document.getElementById('input.linkName');
index.html 
<!DOCTYPE html>
<html>
    <head>
        <title>DOM Manipulation</title>
    </head>
    <link rel="stylesheet" href="style.css" />
    <body>
        <div id="content">
            <label>Link Name:</label>
            <input type="text" id="linkName">
            <a id="link" href="https://teamtreehouse.com"></a>
        </div>
        <script src="app.js"></script>
    </body>
</html>

2 Answers

Sheila Anguiano
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.a{fill-rule:evenodd;}techdegree seal-36
Sheila Anguiano
Full Stack JavaScript Techdegree Graduate 35,239 Points
Sheila Anguiano
.a{fill-rule:evenodd;}techdegree seal-36
Sheila Anguiano
Full Stack JavaScript Techdegree Graduate 35,239 Points

Your need to make sure that the element that you’re referencing in your JavaScript matches the ID property of your html tag:

var inputValue = document.getElementById('linkName');
John Johnson
John Johnson
11,790 Points
John Johnson
John Johnson
11,790 Points

When you're using getElementById(), you can only pass the ID of the element (not the element name + ID).

var inputValue = document.getElementById('linkName');

The way you've written it, you could use querySelector() instead.

var inputValue = document.querySelector('input#linkName')

However, if your ID is unique (which it should be) you could omit "input" from the above, or just use the first code. They'll both work the same way.