js foreach querySelectorAll
const allSpanElements = document.querySelectorAll('span');
allSpanElements.forEach((spanElement) => {
// Here comes the Code that should be executed on every Element, e.g.
spanElement.innerHTML = "This Content will appear on every span Element now";
});what does queryselectorAll returns?
The querySelectorAll() method returns all elements in the document
that matches a specified CSS selector(s), as a static NodeList object.
The NodeList object represents a collection of nodes.
The nodes can be accessed by index numbers.
The index starts at 0.javascript select all elements
// example:
document.querySelectorAll('.message');
// syntax:
// document.querySelectorAll('.<class-name>')javascript queryselectorall
<article class="article first">
<div class="wrapper">
<div class="oferts">
<div class="pro"></div>
<h1>This is the Pro Version</h1>
</div>
<div class="oferts">
<div class="normal"></div>
<h1>This is the normal Version</h1>
</div>
</div>
</article>
// You will get a NodeList as Output
// Try to do : console.log(typeof(oferts)) And you will see the type
<script>
var articleFirst = document.querySelectorAll("article.first");
console.log(articleFirst)
var oferts = articleFirst[0].querySelectorAll(".oferts");
console.log(oferts)
</script>document.queryselector
<div id="foo\bar"></div>
<div id="foo:bar"></div>
<script>
console.log('#foo\bar'); // "#fooar" (\b is the backspace control character)
document.querySelector('#foo\bar'); // Does not match anything
console.log('#foo\\bar'); // "#foo\bar"
console.log('#foo\\\\bar'); // "#foo\\bar"
document.querySelector('#foo\\\\bar'); // Match the first div
document.querySelector('#foo:bar'); // Does not match anything
document.querySelector('#foo\\:bar'); // Match the second div
</script>js queryselectorall
elementList = parentNode.querySelectorAll(selectors);Copyright © 2021 Codeinu
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