ts 统计数组各对象出现的次数+对象数据转存到数组中

统计数组各对象出现的次数

//#region 统计一个数组各元素出现的次数
    function getRepeatNum(arr: any[]) {
      return arr.reduce(function (prev: any, next: any) {
        prev[next] = prev[next] + 1 || 1;
        return prev;
      }, {});
    }
    //#endregion
//使用,可直接用空对象接受
getRepeatNum(arr[]);

ts对象数据转存到数组中

var params = [];
var info= {
		"张三" : "21",
		"李四" : "32",
		"王五" : "14",
		"小红" : "31",
		"小兰" : "24",
		"王明" : "22",
	};
for ( var key in info) {
	var param = {};
	param.name= key;
	param.age= info[key];
	params.push(param);
}
console.log(params)；
//结果[{name:'张三',age:'21'},{name:'李四',age:'32'},{name:'王五',age:'14'},
//	  {name:'小红',age:'31'},{name:'小兰',age:'24'},{name:'王明',age:'22'}]