Question

javascript中如何获得div中所有span对象？

<div id="item">
<span></span>
<span></span>
<span></span>
<span></span>
</div>

Answer 1

var div1 = document.getElementById("item");
for(var i=0 ;i<div1.children.length;i++)
{
alert(div1.children[i].innerHTML);
}

Answer 2

if(document.querySelector){
var aSpan=document.querySelector("#id名 span")
}

else{
var aSpan=document.getElementById("id名").getElementsByTagName("span");

}