获取第一个子元素

html代码:

<div id="abc">
    <span class="abc">123</span>
    <span class="bcd">456</span>
    <span class="abc">789</span>
    <span class="bcd aaa">123123</span>
    <span class="abc">dfgdfg</span>
    <span class="bcd">345345</span>
    <span class="abc">666666</span>
</div>
        

JS代码:

var child = Std.dom("#abc").firstChild();
        

得到结果(Std.dom实例对象):

<span class="abc">123</span>