//index.wxml
<view bindtap="changeIndex" data-src="我固定參數(shù)">
</view>
//index.js
page({
 data:{
 },
 changeIndex(e){
 console.log(e.currentTarget.dataset.src); //我是固定參數(shù)
 }
});

//index.wxml
<view bindtap="changeIndex" data-src1="我固定參數(shù)1" data-src2="我是固定參數(shù)2" >
 
</view>
//index.js
page({
 data:{
 
 },
 changeIndex(e){
 console.log(e.currentTarget.dataset.src1); //我是固定參數(shù)1
 console.log(e.currentTarget.dataset.src2); //我是固定參數(shù)2
 }
});

//index.wxml
<view wx:for="{{lists}}" wx:for-index="index" wx:key="index" data-index="{{index}}" >
{{item.title}}
</view>
//index.js
page({
 data:{
 lists:[{title:'參數(shù)1',id:1},{title:'參數(shù)2',id:2}]
 },
 changeIndex(e){
 console.log(e.currentTarget.dataset.index);
 }
})

<view bindtap="pay_again" data-name="{{orderList.jid}}" data-fee="{{orderList.act_fee}}" data-mobile="{{orderList.p_phone}}" data-act="{{orderList.act_name}}" class="operating f_r webkit-box" style="line-height:30px;"> 
   <a href="" class=" rel="external nofollow" pay bg_red">繼續(xù)支付</a> 
  </view>

// 再次發(fā)起支付請求，調(diào)用后臺PHP
 pay_again:function(e){
 var that = this;
 that.setData({
  jid: e.currentTarget.dataset.name,
  act_name: e.currentTarget.dataset.act,
  act_fee: e.currentTarget.dataset.fee,
  mobile: e.currentTarget.dataset.mobile
 })
 console.log('活動訂單id = ' + that.data.mobile);
 }