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

Polar Digital
Polar Digital
1,141 Points
Posted by Polar Digital
Polar Digital
1,141 Points

I'm trying to use document.querySelector by it doesn't seem to be working and i'm not sure what i'm doing wrong.

Struggling to use document.querySelector when it comes to the challenges.

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>
app.js 
let linkName = document.querySelector ("linkName");

1 Answer

Tijo Thomas
Tijo Thomas
9,737 Points
Tijo Thomas
Tijo Thomas
9,737 Points

Hi, the better option here is to use toe getElementById() method. The reason for this is that specific id's should be used only once in the html. So with that said this is what the code should look like for the first challenge:

let linkName = document.getElementById("linkName").value;

You have to use the .value method to return the value of the value attribute of a text field. You could do this with .querySelector() like this:

// when using query selector to select an id you have to use the "#"
// and to select a class you have to use "."
let linkName = document.querySelector("#linkName").value;

Also remember you shouldn't have a space between querySelector and the parenthesis as you have in your code. Again, querySelector() is used to find the first instance of the desired element.

Steven Parker
Steven Parker
231,271 Points
Steven Parker
Steven Parker
231,271 Points

:point_right: I'm not sure your method is "better" than Polar's.

Both methods return the same result, and take up the same space in the code. I would consider them equivalent.