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Jquery method to determine whether an element is hidden: 1. Use CSS attributes, the code is [var display =$('#id').css('display');]; 2. Use jquery's built-in selector , the code is [if($("#test").is(":hidden")].
The operating environment of this tutorial: windows7 system, jquery3 .2.1 version, DELL G3 computer.
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jquery method to determine whether an element is hidden:
1: Use CSS attributes
The code is as follows:
var display =$('#id').css('display'); if(display == 'none'){ alert("被你发现了,我是隐藏的啦!"); }
2: Use jquery built-in selector
Assume our page There is such a label,
The code is as follows:
<div id="test"> <p>仅仅是测试所用</p> </div>
Then, we can use the following statement to determine whether the label with the id "test" is hidden:
The code is as follows:
if($("#test").is(":hidden")){...} //前提是已经将jQuery的库导进来了
In this way, we can easily determine whether an element is hidden and set animations according to its status. For example:
The code is as follows:
if($("#test").is(":hidden")){ $("#test").show(); //如果元素为隐藏,则将它显现 }else{ $("#test").hide(); //如果元素为显现,则将其隐藏 }
3 : jQuery determines whether the element is displayed or hidden
The code is as follows:
var node=$('#id');
The first way of writing
The code is as follows:
if(node.is(':hidden')){ //如果node是隐藏的则显示node元素,否则隐藏 node.show(); }else{ node.hide(); }
The code for the second way of writing
is as follows:
if(!node.is(':visible')){ //如果node是隐藏的则显示node元素,否则隐藏 node.show(); }else{ node.hide(); } if(node.is(':visible')){ //如果node是显示的则隐藏node元素,否则显示 node.hide(); }else{ node.show(); }
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