JS实现搜索框文字可删除功能

废话不多说了，直接给大家贴js搜索框文字可删除功能，具体代码如下所示：

*:focus {outline: none; }
body {width: 400px;margin: 100px auto;}
#topsearch {height: 33px;}
#topsearch .input {border: 1px solid #77c03a;height: 100%;}
#topsearch .input .clear {width: 30px;height: 35px;line-height: 30px;text-align: center;padding-right: 10px;visibility: hidden;opacity: 0.8;color: gray;}
#topsearch input[type=text] {height:20px;width: 250px;border: none;padding: 5px;}
#topsearch div {float: left;}
#topsearch button {width: 100px;height: 35px;background: #77c03a;color: #fff;border: none;}




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