jQuery height() method sets or returns the height of the selected element.
Syntax:
When used to return the height:
$(selector).height()
When used to set the height:
$(selector).height(value)
When used to set the height using a function:
$(selector).height(function(index,currentheight))
Value:
- Value is a compulsory parameter of the jQuery height() method, as it specifies the height to set in px, em, pt, etc.
Function:
- It is an optional parameter.
- The function parameter is used to return the new height of the selected element.
Index:
- The index is an argument passed within the function.
- It is used to give an index position to an element in the set.
Currentheight:
- This parameter returns the current height of the selected element.
Example1:
<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<script>
$(document).ready(function(){
$("button").click(function(){
alert("Height: " + $("div").height());
});
});
</script>
</head>
<body>
<div style="height:100px;width:500px;padding:10px;margin:3px;border:1px solid blue;background-color:lightpink;"></div><br>
<button>Height</button>
</body>
</html>
Example2:
<!DOCTYPE html>
<html>
<head>
<style>
div {
width: 100px;
height: 120px;
float: left;
margin: 5px;
background:orange;
cursor: pointer;
}
.mod {
background: turquoise;
cursor: default;
}
</style>
<script src="https://code.jquery.com/jquery-1.10.2.js"></script>
</head>
<body>
<div>Tall</div>
<div>Small</div>
<div>Smaller</div>
<div>Smallest</div>
<script>
var modheight = 100;
$( "div" ).one( "click", function() {
$( this ).height( modheight ).addClass( "mod" );
modheight -= 10;
});
</script>
</body>
</html>