js实现json数组分组合并操作示例

<script> var arr = [ {"id":"1001","name":"值1","value":"111"}, {"id":"1001","name":"值1","value":"11111"}, {"id":"1002","name":"值2","value":"25462"}, {"id":"1002","name":"值2","value":"23131"}, {"id":"1002","name":"值2","value":"2315432"}, {"id":"1003","name":"值3","value":"333333"} ]; var map = {}, dest = []; for(var i = 0; i < arr.length; i++){ var ai = arr[i]; if(!map[ai.id]){ dest.push({ id: ai.id, name: ai.name, data: [ai] }); map[ai.id] = ai; }else{ for(var j = 0; j < dest.length; j++){ var dj = dest[j]; if(dj.id == ai.id){ dj.data.push(ai); break; } } } } console.log(dest); /* //运行结果： [ { "id": "1001", "name": "值1", "data": [ {"id": "1001", "name": "值1", "value": "111"}, { "id": "1001", "name": "值1", "value": "11111"} ] }, { "id": "1002", "name": "值2", "data": [ { "id": "1002", "name": "值2", "value": "25462" }, { "id": "1002", "name": "值2", "value": "23131"}, {"id": "1002", "name": "值2","value": "2315432" } ] }, { "id": "1003", "name": "值3", "data": [ {"id": "1003", "name": "值3", "value": "333333" } ] } ] */ </script>

使用在线HTML/CSS/JavaScript代码运行工具：测试上述代码，可得如下运行结果：

PS：关于json操作，这里再为大家推荐几款比较实用的json在线工具供大家参考使用：

在线JSON代码检验、检验、美化、格式化工具：

JSON在线格式化工具：

在线XML/JSON互相转换工具：

json代码在线格式化/美化/压缩/编辑/转换工具：

在线json压缩/转义工具：

更多关于JavaScript相关内容可查看本站专题：《JavaScript中json操作技巧总结》、《JavaScript查找算法技巧总结》、《JavaScript错误与调试技巧总结》、《JavaScript数据结构与算法技巧总结》、《JavaScript遍历算法与技巧总结》及《JavaScript数学运算用法总结》