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js 根據(jù)日期對(duì)數(shù)組重新分組

JavaScript

慕勒3428872 2019-05-20 10:22:57

原數(shù)據(jù)：vardata=[{"name":"小明","age":"4","birthday":"5-1"},{"name":"小黃","age":"4","birthday":"5-1"},{"name":"小紅","age":"4","birthday":"5-3"},]希望整理后得到：varnewArr=[{"birthday":"5-1","detailList":"[{'name':'小明','age':'4'},{'name':'小黃','age':'4'}]"},{"birthday":"5-3","detailList":"[{'name':'小紅','age':'4'}]"}];我的思路；data數(shù)組第0項(xiàng)直接push（birthday+detailList）整個(gè)到新數(shù)組newArr，但從第1項(xiàng)就要開(kāi)始去newArr比較birthday，如果birthday相同，就只用push（detailList），如果不同就push{birthday+detailList}遇到問(wèn)題：重復(fù)打印了一些數(shù)據(jù)我的代碼：`vardata=[{"name":"小明","age":"4","birthday":"5-1"},{"name":"小黃","age":"4","birthday":"5-1"},{"name":"小紅","age":"4","birthday":"5-3"},]//[希望得到]//varnewArr=[//{//"birthday":"5-1",//"detailList":"[{'name':'小明','age':'4'},{'name':'小黃','age':'4'}]"http://},//{//"birthday":"5-3",//"detailList":"[{'name':'小紅','age':'4'}]"http://}//];vararr=[];//存放新數(shù)組for(vari=0;i

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冉冉說(shuō)

TA貢獻(xiàn)1877條經(jīng)驗(yàn) 獲得超1個(gè)贊

下面這段代碼修改如下：//第1個(gè)就要開(kāi)始找新數(shù)組arr相同的日期else{varindex=-1;//通過(guò)for循環(huán)查找indexfor(vark=0;kif(resBirthday==arr[k].birthday){index=k;break;}}if(index===-1){//沒(méi)有找到arr.push(valItem);}else{//找到了arr[k].detailList.push(valDetailList);}}