コード:PC CSS(作業中用)

.l{float:left;}
.dib{display:inline-block;}
.vm{vertical-align:middle;}

.page-box{margin-top:44px;text-align:center;}
.page-box .pbtn{display:inline-block;vertical-align:middle;width:40px;height:40px;line-height:40px;font-size:12px;color:#999;border:1px solid #ececec;box-sizing:border-box;text-align:center;margin-left:-1px;}
.page-box .pbtn:hover,.page-box .pbtn.active{background:#ea5404;color:#fff;border:1px solid #ea5404;}
.page-box .mr8{margin-right:8px;}
</style>
<div class="page-box">
    <a href="" class="pbtn mr8">&lt;</a>
    <div class="dib vm mr8">
        <a href="" class="pbtn l active">1</a>
        <a href="" class="pbtn l">2</a>
        <a href="" class="pbtn l">3</a>
        <a href="" class="pbtn l">4</a>
        <a href="" class="pbtn l">5</a>
        <a href="" class="pbtn l">6</a>
        <a href="" class="pbtn l">7</a>
        <a href="" class="pbtn l">8</a>
        <a href="" class="pbtn l">9</a>
        <a href="" class="pbtn l">10</a>
    </div>
    <a href="" class="pbtn mr8">&gt;</a>
    <a href="" class="pbtn mr8">&gt;&gt;</a>
</div>

<script type="text/javascript" src="http://cdn.bootcss.com/jquery/1.11.2/jquery.min.js"></script>
<script type="text/javascript">
$(function(){
var askDesign = {
        focusBlur: function(ele) {
            function trimCode(s) {
                s = $.trim(s);
                s = s.replace(/ /g, '');
                s = s.replace(/\t/g, '');
                s = s.replace(/\r/g, '');
                s = s.replace(/
/g, '');
                return s;
            }
                console.log(ele.length);
            for(var i=0;i<ele.length;i++){
                var _e = $(ele[i]);
                //    ，        、      ，       data-value          。
                var _val = trimCode(_e.val());
                if (_val == '') {
                    _e.val(_e.attr('data-value')).addClass("gray");//   
                }
                _e.focus(function() {
                    var _val = $.trim($(this).val());
                    if ($(this).attr('data-value') == _val) {
                        $(this).val('').removeClass("gray");
                    }
                }).blur(function() {
                    var _val = $.trim($(this).val());
                    var _attrVal = $(this).attr('data-value');
                    if (_val == '') {
                        $(this).val(_attrVal).addClass("gray");
                    }
                });
            }
        },
        log: function() {
        }
};
askDesign.focusBlur($('.input'));//input    
askDesign.focusBlur($('.textarea'));//textarea    
});
</script>
<style type="text/css">
input,textarea{outline: none;}
.gray{color:#aaa!important;}
.com-form .input{padding:0.8em 1em 0.6em 1em;border-radius:2px;background:#fafafa;color:#333;border:1px solid #ececec;}
.com-form .textarea{padding:1rem 1em;line-height:1.666;border-radius:2px;background:#fafafa;color:#333;border:1px solid #ececec;}
.com-form .input::-webkit-input-placeholder,.com-form .textarea::-webkit-input-placeholder{color:#aaa;}
.com-form .input:focus,.com-form .textarea:focus{border:1px solid #ff7200;}
</style>
<form method="post" action="" class="com-form">
<input type="text" name="" class="input" data-value="  "><br>
<input type="text" name="" placeholder="  " /><br>
<textarea name="" rows="12" cols="50" class="textarea" data-value="  "></textarea><br>
<textarea name="" rows="12" cols="50" placeholder="  "></textarea><br>
</form>