jQuery快速实现商品数量加减的方法
废话不多说了,直接给大家贴代码了,具体代码如下所示:
<!-- 快速实现数量加减 --> <!DOCTYPE html> <html> <head> <meta charset="utf-8"> <script src="http://libs.baidu.com/jquery/1.10.2/jquery.min.js"></script> <script> $(document).ready(function(){ //获得文本框对象 var t = $("#text_box"); //初始化数量为1,并失效减 $('#min').attr('disabled',true); //数量增加操作 $("#add").click(function(){ // 给获取的val加上绝对值,避免出现负数 t.val(Math.abs(parseInt(t.val()))+1); if (parseInt(t.val())!=1){ $('#min').attr('disabled',false); }; }) //数量减少操作 $("#min").click(function(){ t.val(Math.abs(parseInt(t.val()))-1); if (parseInt(t.val())==1){ $('#min').attr('disabled',true); }; }) }); </script> </head> <body> <input id="min" name="" type="button" value="-" /> <input id="text_box" name="" type="text" value="1" style="width:30px;text-align: center"/> <input id="add" name="" type="button" value="+" /> </body> </html>
实现数量加减,就是这么简单!
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