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I have a div that is floating left and the other floating right. I want to check if the div that is floating right has children element; if the it don't have any visible element, I want applied and new class to the left div. See below:
<div id="leftContent" class="left ">
<table></table>
</div>
<div id="rightContent" class="content">
//the dom has no visible element
//”#ctl00_ContentPlaceHolder1_ somegridView” is not visible
</div>
And I’m using the following script:
$(document).ready(function() {
if ($(“#ctl00_ContentPlaceHolder1_ somegridView”).lenght = 0) {
$("# leftContent ").removeClass("left");
$("# leftContent ").addClass("center");
}
});
div.left
{
float: left;
width: 365px;
margin-left: 5px;
padding-left: 2px;
}
div.center
{
padding: 2px;
margin: 5px;
float: none;
width: 95%;
clear: both;
}
If div id="rightContent" empty?
881
To check if an HTML element has child nodes, you can use the hasChildNodes() method. This method returns true if the specified node has any child nodes, otherwise false . Whitespace and comments inside a node are also considered as text and comment nodes.
Definition and Usage. The children() method returns all direct children of the selected element. The DOM tree: This method only traverse a single level down the DOM tree. To traverse down multiple levels (to return grandchildren or other descendants), use the find() method.
Answer: Use the jQuery find() Method You can use the find() method to get the children of the $(this) selector using jQuery. The jQuery code in the following example will simply select the child <img> element and apply some CSS style on it on click of the parent <div> element.
if ( $("#rightContent").children().length > 0)
{
// do style changes
}
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