返回合并并去重后的结果数组。 下面是具体的代码实现: javascript function mergeAndDeduplicate(arrays, key) { // 用于存储结果数组的映射对象 const map = new Map(); // 遍历所有待合并的数组 arrays.forEach(array => { array.forEach(item => { // 使用对象的key属性作为Map的键 const existin...
let jsonArr=[ {"ID": "","NO": "1","NAME": "测试对象1"}, {"ID": "","NO": "2","NAME": "测试对象2"}, {"ID": "","NO": "3","NAME": "测试对象3"}, {"ID": "","NO": "4","NAME": "测试对象4"}, {"ID": "","NO": "5","NAME": "测试对象5"} ]; let ...
js 合并数组对象中的相同项,并统计数量和,letlist=[{id:11,name:'apple',num:2},{id:11,name:'apple',num:3},{id:22,name:'pig',num:2},{id:11,name:'apple',num:2},]list=list