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JavaScript jQuery Basics Understanding jQuery Events and DOM Traversal Adding New Elements to the DOM

Liam Hayes
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Liam Hayes
Full Stack JavaScript Techdegree Student 13,116 Points

What does it mean when I do this with JQuery? const newStudent = $('<li>Sam Smith</li>');

Hi there :)

If I type this in a project javascript's file

var newStudent = $('<li>Sam Smith</li>'); 

What does this accomplish? (By the way, when I type that there is not already a Sam Smith list item in the HTML already. I'm typing a new list item, not trying to select one from the HTML file).

Thank you very much :)

2 Answers

Exactly. Instead of selecting an element from the DOM, you are creating a new list item element and initializing it as a jQuery object, allowing you to use any jQuery functions on the "newStudent" variable. You should then be able to do actions like:

newStudent.addClass('name-in-red')

to achieve

<li class="name-in-red">Sam Smith</li>

All before adding it to the DOM, i.e.:

$('ul').append(newStudent);  // add  the list item to (the end of) the <ul> tag

Example: https://jsbin.com/socoqiwume/edit?html,js,output

You are welcome Liam!