更改div的背景颜色 [英] change background color of div

问题描述

这么简单，我搜索，但找不到确切的答案。

this is so simple and I searched but couldn't find the exact answer.

所有我想做的是有一个div，一条链接。我想要有3或4种颜色选择。我该如何做？

All I want to do is have a div that will change color when you click a link. I want to have about 3 or 4 color choices. How do I do it?

谢谢！

推荐答案

演示： http://jsfiddle.net/jnAem/

JS：

var els = document.getElementsByClassName('change-color'),
    target = document.getElementById('target'),
    changeColor = function(){
        target.style.backgroundColor = this.getAttribute('data-color');
    };
for(var i=els.length-1; i>=0; --i){
    els[i].onclick = changeColor;
}

HTML：

<div id="target"></div>
<button class="change-color" data-color="red">Red</button>
<button class="change-color" data-color="#000">Black</button>
<button class="change-color" data-color="rgb(0,0,255)">Blue</button>

---

请注意，如果您希望所有换色器相同元素的子元素，您可以使用事件委托并减少之前的代码

---

Note that if you want all color changers to be children of same element, you can use event delegation and reduce the previous code to

JS：

document.getElementById('color-changers').onclick = function(e) {
    var color = (e ? e.target : window.event.srcElement).getAttribute('data-color');
    if(color){
        target.style.backgroundColor = color;
    }
}

HTML：

<div id="target"></div>
<div id="color-changers">
    <button data-color="red">Red</button>
    <button data-color="#000">Black</button>
    <button data-color="rgb(0,0,255)">Blue</button>
</div>

演示： http://jsfiddle.net/jnAem/1/

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