In jquery, you can use the ":visible" selector and is() method to determine whether an element is displayed. The syntax is "element object.is(':visible')". You can check whether the specified element is displayed. Matches the ":visible" selector, that is, whether it is a visible element; if the element is displayed, it returns true.
The operating environment of this tutorial: windows7 system, jquery1.10.2 version, Dell G3 computer.
In jquery, you can use the ":visible" selector and is() method to determine whether an element is displayed
is() method is used to view the selected Whether the element matches the selector.
-
: The visible selector selects each element that is currently visible.
Elements other than the following situations are visible elements:
is set to display:none
with Form elements with type="hidden"
width and height set to 0
hidden parent elements (this will also hide child elements )
Syntax to determine whether an element is displayed:
元素对象.is(':visible')
means to check whether the specified element matches ":visible "Selector, that is, whether it is a visible element
Example:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<script src="js/jquery-1.10.2.min.js"></script>
<script>
$(function () {
$("button").click(function () {
var node=$('span');
if(node.is(':visible')){
alert("显示元素");
}else{
alert("隐藏元素，将它显示出来");
node.show();
}
})
})
</script>
</head>
<body>
<div>这是一段可见的div内容。</div>
<span hidden="hidden">这是一个被隐藏的内容，现在显示出来了。</span>
<p>这是一段可见的内容。</p>
<button>判断span元素是否显示</button>
</body>
</html>
[Recommended learning: jQuery video tutorial, web front-end video】
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