How can I get a nested DOM element in javascript instead of using jQuery? Example:
$('#id') = document.getElementById('id');
I would like to convert this jQuery selector $('.nav > li')
to javascript. How can I do that?
You have a really nice function called document.querySelectorAll()
which can select elements with css queries.
document.querySelectorAll('.nav > li');
If you plan to use it more than once, you can also use a var so it'll feel like using jQuery
var _ = document.querySelectorAll.bind(document)
var menuItems = _('.nav > li');
Just to complement the answers suggesting querySelectorAll
, here's how you would achieve that with old school DOM operations.
var selected = [];
// get all elements that have the class 'nav' (.nav)
var navs = document.getElementsByClassName('nav');
var i, j, children;
// iterate over each nav and get a list of their direct children (.nav >)
for(i = 0; i < navs.length; i++) {
children = navs[i].children;
// iterate over the children and select if the tag is li (.nav > li)
for(j = 0; j < children.length; j++) {
if(children[j].tagName === 'LI') {
selected.push(children[j]);
}
}
}
Also serves as a good example of why declarative programming is better suited to this kind of task.
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