<div class="t_input"> ???????<label>¥</label> ???????<input type="text" name="" class="t_num" id="t_use"> ???????<span class="place_span">可提现金额:¥9,995.23</span></div>
input里面的内容改变时span标签里的内容消失,input里面的内容为空时,当失去焦点后span标签显示
<script type="text/javascript"> ???????$("#t_use").bind("input propertychange",function(){ ???????????$(this).next(‘span‘).css("display",‘none‘); ???????}) ???????$("#t_use").blur(function(){ ???????????if($(this).val()==""){ ???????????????$(this).next(‘span‘).css("display",‘block‘) ???????????} ???????})
</script>
Jquery内容改变时触发事件
原文地址:http://www.cnblogs.com/jvziking/p/8023032.html