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

Posted by Wenhui (Sarah) Zhang
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Wenhui (Sarah) Zhang
Full Stack JavaScript Techdegree Student 3,852 Points

input value

Ok... I'm not sure if I'm doing this wrong... Sorry if this is a simple question...

app.js 
let inputValue = input.value;
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

Balazs Peak
Balazs Peak
46,160 Points
Balazs Peak
Balazs Peak
46,160 Points

First, you have to select the corresponding HTML element, and then you can access its value. You've tried to access the element by simply using it's tagname. It doesn't work like that. You have to use a JS function for the purpose of selecting the HTML element, for example document.getElementById(), or document.querySelector(). These will create an object represenation of the HTML element in your JS code, which you can manipulate. Have fun ;)

Steven Parker
Steven Parker
231,261 Points
Steven Parker
Steven Parker
231,261 Points

You have the right idea about getting the "value" property, but "input" is not currently defined in the JavaScript code. But the element you want has an ID property, so you could get to it using the "getElementById" method. This is demonstrated in this video which was recommended in the challenge as a refresher.

Balazs's suggestion of "querySelector" would also work, but I don' t think that has been introduced yet in the course.