项目需要，自己写了一个jquery代码，该代码需要满足两个文本框都不为空值，按钮才可用激活状态。

请转载此文的朋友务必附带原文链接，谢谢。

原文链接：http://xuyran.blog.51cto.com/11641754/1827959

<!DOCTYPEhtml><html><head><metacharset="UTF-8"><metaname="viewport"content="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no"><scriptsrc="../../js/jquery.js"></script><scriptsrc="../../js/mui.min.js"></script><linkhref="../../css/mui.min.css"rel="stylesheet"/><linkrel="stylesheet"href="../../css/iconfont.css"><linkrel="stylesheet"href="../../css/app.css"><title>红包设置</title><script>$(document).ready(function(){$(".mui-input-rowinput").keyup(function(){varvalue2=$(this).parent().siblings().find("input").val();if(this.value!=""&&value2!=""){$(".sc-btnbutton").attr("disabled",false);}else{$(".sc-btnbutton").attr("disabled",true);}});});</script><style>html,body{background:#fef9f4;}.mui-content{padding-top:20px;background:#fef9f4;}.mui-input-row,.mui-input-row:last-child{width:90%;margin:auto;background:#FFFFFF;margin-bottom:10px;}.mui-input-rowlabel{font-family:"微软雅黑";}h3{text-align:center;font-weight:normal;padding:40px00;}.sc-btn{width:90%;margin:auto;padding-top:80px;}.mui-btn-block{padding:10px0;}.mui-btn-blue{background:#a02227;border:none;}.mui-btn-blue.focus-active{background:#a02227;}</style></head><body><divclass="mui-content"><divclass="mui-input-row"><label>红包个数</label><inputtype="text"placeholder="填写红包个数"></div><divclass="mui-input-row"><label>单个金额</label><inputtype="text"placeholder="填写神灯币"></div><h3>￥30个神灯币</h3><divclass="sc-btn"><buttontype="button"class="mui-btnmui-btn-bluemui-btn-block"disabled="disabled">付款</button></div></div></body></html>

效果预览：