$("p:first").hide();
$("#show").click(function(){
alert($("#div1").innerHeight());});
//$("#div1").innerHeight("130px");});
<div id="div1">13</div>
<h1>Property</h1>
<h1>Attribute</h1>
<p id="p1">Paragraph1</p>
<p id="p2">Paragraph2</p>
<button id="show">显示</button>
<button id="hide">隐藏</button>
#div1{
height:30;
border: 5px solid;
}