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                [TOC] # 1.setData(相當于把數據傳到data里) [https://etianqq.gitbooks.io/-wechat/content/setdata.html](https://etianqq.gitbooks.io/-wechat/content/setdata.html) * setData 函數用于將數據從邏輯層發送到視圖層,同時改變對應的 this.data 的值。 > 注意: > 1. 直接修改 this.data 無效,無法改變頁面的狀態,還會造成數據不一致。 > 2. 單次設置的數據不能超過1024kB,請盡量避免一次設置過多的數據。 ``` Page({ data: { text: 'init data', array: [{text: 'init data'}], object: { text: 'init data' } }, changeText: function() { // this.data.text = 'changed data' // bad, it can not work this.setData({ text: 'changed data' }) }, changeItemInArray: function() { // you can use this way to modify a danamic data path this.setData({ 'array[0].text':'changed data' }) }, changeItemInObject: function(){ this.setData({ 'object.text': 'changed data' }); }, addNewField: function() { this.setData({ 'newField.text': 'new data' }) } }) ``` ## 注意 setData() 與 setData({}) 的區別 ``` movie = [ {title,name,id}, {title,name,id} , {title,name,id} ] this.setData({ movie }) //傳到頁面的是 movie=[ {title,name,id} , {title,name,id} , {title,name,id} ] this.setData( movie ) // 傳到頁面的是 {title,name,id} {title,name,id} {title,name,id} ```
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