Home Web Front-end JS Tutorial JS realizes changing the background of a tag when it is clicked_javascript skills

JS realizes changing the background of a tag when it is clicked_javascript skills

May 16, 2016 pm 05:20 PM
a tag js Change background

复制代码 代码如下:











1





在alabel.js中:
复制代码 代码如下:

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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