/** index.js*/ var app = getApp() Page({ data: { /** * 页面配置 */ winWidth: 0, winHeight: 0, // tab切换 currentTab: 0, option1:[ {value:"1",contant:"A:xxxx"}, {value:"2",contant:"B:xxxx"}, {value:"3",contant:"C:xxxx"}, {value:"4",contant:"D:xxxx"} ], option2: [ { value: "1", contant: "A:xxxx" }, { value: "2", contant: "B:xxxx" }, { value: "3", contant: "C:xxxx" }, { value: "4", contant: "D:xxxx" } ], option3: [ { value: "1", contant: "A:xxxx" }, { value: "2", contant: "B:xxxx" }, { value: "3", contant: "C:xxxx" }, { value: "4", contant: "D:xxxx" } ], option1Value:0, option2Value:0, option3Value:0, }, onLoad: function() { swiperChange: function(e){ var that = this; if(that.data.currentTab==0){ that.setData({ option1Value : e.detail.value, currentTab: 1 }); }else if(that.data.currentTab==1){ that.setData({ option2Value : e.detail.value, currentTab: 2 }); }else if(that.data.currentTab==2){ that.setData({ option3Value : e.detail.value, currentTab: 3 }) } } })    第一题 第二题 第三题        {{item.contant}}        {{item.contant}}        {{item.contant}}     {{score}} 

The above is my code. I want to realize that there are three questions on the page, each with four options with different scores. The results will pop up directly after the user selects. However, the JSON data that stores the options selected by the user is a string. How to convert it? For numeric type?