将数组中有相同的key合并为新的数组,其实也就是将一维数组修改为多维数组: let data =[ { name:"苹果", orderCode:"AAAAAAAA"}, { name:"橘子", orderCode:"BBBBBBBB"}, { name:"香蕉", orderCode:"CCCCCCCCC"}, { name:"苹果", orderCode:"DDDDDDDD"}, { name:"橘子", orderCode:"EEEEEEE"}...
js中将对象(obj)转变为数组[key,vlaue],字符串大小写转换 js中将对象(obj)转变为类数组[key,vlaue] js中将对象(obj)转变为类数组[key,vlaue] js中将对象(obj)转变为类数组[key,vlaue] 今天讲一个在js中将对象转变为数组[key,value]的方法 Object.entries(obj) 返回一个数组:for example: 字符串大小写转...
arr.forEach(item => { Object.keys(item).forEach(key => { const mustIndex = resultList.findIndex(itema => itema.name === key); if(~mustIndex) { resultList[mustIndex].data.push(item[key]); return; } resultList.push({ name: key, type:'line', data: [item[key]] }); }); }...
JS 将数字字符串数组转为 数字数组 (互换) vararr = [1, 2, 3, 4, 5, 6, 7, 8, 9]; arr.map(String);//结果: ['1', '2', '3', '4', '5', '6', '7', '8', '9']vara = ['1', '2', '3', '4', '5', '6', '7', '8', '9'] a.map(Number);//结果:[1,...
js获取 数组对象中 某一个key的值组成的数组 let arr=[ {age:13,name:"a"}, {age:14,name:""}, {age:15,name:"c"}, {age:16,name:"d"}, {age:16,name:"e"}, ] let nameArr= arr.map(item =>item.name); console.log(nameArr);//["a", "", "c", "d", "e"] ...