JS 依照元素出現數量排序


var array = ["1", "2", "4", "5", "2", "4", "2", "3"];
var str = array.toString();
var filter = [];
var result = [];
document.write("原始陣列:" + array + "<br>");

var get = function (str, tar, arr, tmp) {
    if (str.indexOf(tar) >= 0) {
        tmp = str.slice(str.indexOf(tar) + 1);
        get(tmp, tar, arr, tmp);
    return arr;

for (i in array) {
    var elm = [];
    var tmp;
    var fstr = filter.join();
    if (fstr.indexOf(array[i]) >= 0) {
    } else {
        var tmp_arr = get(str, array[i], elm, tmp);
        result.push(tmp_arr.length + ':' + tmp_arr[0]);


var finishArray = [];

for (index in result) {
    var show = result[index].split(':');
    for (i = 0; i < show[0]; i++) {
document.write("按出現次數排序,不刪除重複元素:" + finishArray + "<br>");

var finishArray = [];
for (index in result) {
    var show = result[index].split(':');
document.write("按出現次數排序,刪除重複元素:" + finishArray + "<br>");



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