


JS realizes changing the background of a tag when it is clicked_javascript skills
在alabel.js中:
window.onload = function ()
{
var aspan = document.getElementsByTagName("span");
var i = 0;
for (i = 0; i < aspan.length; i )
{
aspan[i].onclick = function ()
{
for (i = 0; i < aspan.length; i ) aspan[i].className = "";
this.className = "curr";
};
}
};
这样就可以实现在点击a标签的时候给其添加红色的背景。
注意:curr的属性中display不能是block,否则添加的背景是一整行。

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