微信小程序 实例应用（记账）详解

},// 计算总额
caculateTotal:function(data){
var tempTotal = 0;
for(var x in data){
tempTotal += parseFloat(data[x].amount);
}
this.setData({
accountTotal: tempTotal
});
},//表单提交
formSubmit:function(e){
this.setData({
buttonLoading: true
});

var that = this;
setTimeout(function(){
var inDetail = e.detail.value.inputdetail;
var inAmount = e.detail.value.inputamount;
if(inDetail.toString().length <= 0 || inAmount.toString().length <= 0){
console.log("can not empty");
that.setData({
buttonLoading: false
});
return false;
}

 //新增记录
 var tempAccountData = wx.getStorageSync("accountData") || [];
 tempAccountData.unshift({detail:inDetail,amount:inAmount});
 wx.setStorageSync("accountData",tempAccountData);
 that.caculateTotal(tempAccountData);
 that.setData({
   accountData: tempAccountData,buttonLoading: false
 });

},1000);
},//删除行
deleteRow: function(e){
var that = this;
var index = e.target.dataset.indexKey;
var tempAccountData = wx.getStorageSync("accountData") || [];
tempAccountData.splice(index,1);
wx.setStorageSync("accountData",tempAccountData);
that.caculateTotal(tempAccountData);
that.setData({
accountData: tempAccountData,});
}
})