菜鸟问题,为什么宽没有变成50px;
<div id="dk">
<div id="xk">
<img src="15.jpg" alt="">
<img src="15.jpg" alt="">
<img src="15.jpg" alt="">
</div>
</div>
<script>
window.onload = function(){
var dk = document.getElementById("xk");
var xk = document.getElementsByTagName("img");
xk.style.width = 50 + 'px';
}
</script>xk是个数组,要使用for遍历