querYSeLECTOR syntax code example
Example 1: queryselector
var el = document.querySelector(".myclass");
Example 2: javascript queryselector
const myParagraph = document.querySelector('.example');
myParagraph.textContent = 'This is my new text';
Example 3: queryselector javascript
var element = document.querySelector("#myid .myclass p");
Example 4: queryselector function in javascript
document.querySelector(".ClassName")
document.querySelector("#ID")
Example 5: document.queryselector
<div id="foo\bar"></div>
<div id="foo:bar"></div>
<script>
console.log('#foo\bar');
document.querySelector('#foo\bar');
console.log('#foo\\bar');
console.log('#foo\\\\bar');
document.querySelector('#foo\\\\bar');
document.querySelector('#foo:bar');
document.querySelector('#foo\\:bar');
</script>