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IE如何兼容placeholder属性

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

posted @ 2015-10-28 20:29  Jesse131  阅读(898)  评论(0编辑  收藏  举报