首先来看一下效果图：
（推荐教程：js教程）
具体代码如下：
<html><head> <meta charset="UTF-8"> <title>自定义select</title></head><style> *{ margin: 0; padding: 0; } #main{ position: relative; width: 280px; height: 42px; } #content{ width: 280px; height: 42px; line-height: 42px; padding-left: 10px; background: rgb(255, 255, 255); border-radius: 2px; border: 1px solid rgb(221, 221, 221); font-size: 16px; font-family: MicrosoftYaHei; color: rgb(51, 51, 51); cursor: pointer; } #selectImg{ position: absolute; top:13px; right: 10px; cursor: pointer; } #selectItem{ display: none; border: 1px solid #eee; width: 290px; } #selectItem ul{ list-style: none; } #selectItem ul li{ height: 30px; line-height: 30px; padding-left: 10px; cursor: pointer; } #selectItem ul li:hover{ background-color:#f5f7fa; }</style><body> <div id="main"> <div id="content"> </div> <img id="selectImg" src="./icon_select.png" alt=""> <div id="selectItem"> <!-- <ul> <li data-value="1">北京</li> <li data-value="2">上海</li> <li data-value="3">深圳</li> </ul>--> </div> </div></body><script> var data = [{name:'北京',value:'1'},{name:'上海',value:'2'},{name:'广州',value:'3'}] var content = document.getElementById('content'); var selectImg = document.getElementById('selectImg'); var selectItem = document.getElementById('selectItem'); var ul = document.createElement('ul'); selectItem.appendChild(ul); for(var i = 0; i < data.length; i++){ var li = document.createElement('li'); li.setAttribute('data-value',data[i].value); li.innerText = data[i].name; ul.appendChild(li); } /** * 点击下拉箭头 */ selectImg.onclick = function () { console.log(selectItem.style.display); if(selectItem.style.display == 'none' || selectItem.style.display == ''){ selectItem.style.display = 'block'; }else{ selectItem.style.display = 'none'; } } content.onclick = function () { if(selectItem.style.display == 'none' || selectItem.style.display == ''){ selectItem.style.display = 'block'; }else{ selectItem.style.display = 'none'; } } var lis = selectItem.getElementsByTagName('li'); for(var i = 0; i < lis.length; i++){ lis[i].onclick = function () { console.log(this.innerHTML,this.getAttribute('data-value')); content.innerText = this.innerHTML; selectItem.style.display = 'none'; } }</script></html>
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