IE如何兼容placeholder属性_html/css_WEB-ITnose
在前端开发中，经常需要为input设置placeholder属性，但是placeholder是HTML5新属性，在IE10以下不兼容，那么如何完美兼容呢？
网上搜索了一下，其实也挺简单的，可以采用以下方法：
<script type="text/javascript"> if (!('placeholder' in document.createElement('input'))) { $('input[placeholder],textarea[placeholder]').each(function() { var that = $(this), text = that.attr('placeholder'); if (that.val() === "") { that.val(text).addClass('placeholder'); } that.focus(function() { if (that.val() === text) { that.val("").removeClass('placeholder'); } }).blur(function() { if (that.val() === "") { that.val(text).addClass('placeholder'); } }).closest('form').submit(function() { if (that.val() === text) { that.val(''); } }); }); }<script>这段代码很容易理解，但是用的时候发现对type=password类型不支持，于是继续搜索直到有了JPlaceHolder.js，感觉很不错，用起来也很简单
<!DOCTYPE html><html><head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> <title>Examples</title> <meta name="description" content=""> <meta name="keywords" content=""></head><body> <input type="password" placeholder="密码"> <script src="http://apps.bdimg.com/libs/jquery/1.9.1/jquery.min.js"></script> <script src="JPlaceHolder.js"></script></body></html>
下载地址：JPlaceHolder.js
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