I am reading jQuery, i don't know why use ("*") please explain it's helpful
<script>
$(document).ready(function(){
$("button").click(function(){
$("*").hide();
});
});
</script>
* is a selector in jquery which select everything without any condition including html, head and body.
Here is an example explaining its usage.
$(document).ready(function(){
$("button").click(function(){
$("*").hide();
});
});<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div>
Hello text
</div>
<button>Click Me to Hide everything</button>$(document).ready(function(){
$("button").click(function(){
$("div *").toggle();
});
});div{
border:0.5px solid red;
}<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div>
<p>Hello text</p>
<a>Here is a link </a>
</div>
<button>Click Me to Hide/ Show elements inside the div</button>$(*) is used to select all elements inside the document. Refer this: https://www.w3schools.com/jquery/sel_all.asp
$(*) is a selector in jqueryto select all elements
and hence
$("*").hide(); will hide all elements
$(document).ready(function(){
$("button").click(function(){
$("*").hide();
});
});<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div>Hello</div>
<p>World</p>
<span>Good Morning</span>
<button>Hide</button>