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☆☆☆☆☆Placeholder兼容各大浏览器的例子☆☆☆☆☆

<!doctype html><html><head>    <meta charset="utf-8">    <title>Placeholder兼容各大浏览器的例子</title>    <script src="jquery-1.8.0.min.js"></script></head><body><form>    <div>        <ul>            <li>                <input type="text" name="username" placeholder="用户名">            </li>            <li>                <input type="password" name="username" placeholder="密码">            </li>            <li>                <button type="button">登录</button>            </li>        </ul>    </div></form></body></html><!--以下就是代码也可以单独起个名字,使用link在头部引用--><script>    /*     * jQuery placeholder, fix for IE6,7,8,9     * @author JENA     * @since 20131115.1504     * @website ishere.cn     */    var JPlaceHolder = {        //检测        _check : function(){            return placeholder in document.createElement(input);        },        //初始化        init : function(){            if(!this._check()){                this.fix();            }        },        //修复        fix : function(){            jQuery(:input[placeholder]).each(function(index, element) {                var self = $(this), txt = self.attr(placeholder);                self.wrap($(<div></div>).css({position:relative, zoom:1, border:none, background:none, padding:none, margin:none}));                var pos = self.position(), h = self.outerHeight(true), paddingleft = self.css(padding-left);                var holder = $(<span></span>).text(txt).css({position:absolute, left:pos.left, top:pos.top, height:h, lienHeight:h, paddingLeft:paddingleft, color:#aaa}).appendTo(self.parent());                self.focusin(function(e) {                    holder.hide();                }).focusout(function(e) {                    if(!self.val()){                        holder.show();                    }                });                holder.click(function(e) {                    holder.hide();                    self.focus();                });            });        }    };    //执行    jQuery(function(){        JPlaceHolder.init();    });</script>

亲测,IE各版本都支持

☆☆☆☆☆Placeholder兼容各大浏览器的例子☆☆☆☆☆