js统计字符出现的次数

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</head> <body> <script>

    输入一个字符串，统计该字符串中每个字符出现的次数 

    var str = "aabbccddeeef";
    var strNew = {};创建一个空的对象
    for(var i=0; i<str.length; i++){
        var num = str[i];
        if (!strNew[num]) {
            strNew[num] = 1;
        }else {
            strNew[num] += 1;
        }
    }
    console.log(strNew);
</script>

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posted on 2023-04-05 15:50 hqingxiang 阅读(1099) 评论(0) 收藏举报