40.@返回字符串中出现次数最多的那个字符和次数2-优快云博客

本文介绍了一种使用JavaScript实现的方法，用于找出给定字符串中出现次数最多的字符及其出现次数。通过构建一个对象来记录每个字符的出现频率，然后遍历该对象以确定出现次数最多的字符。

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 1 <!DOCTYPE html>
 2 <html>
 3 <head lang="en">
 4     <meta charset="UTF-8">
 5     <title>@返回字符串中出现次数最多的那个字符和次数2</title>
 6 
 7 </head>
 8 <body>
 9 </body>
10 
11 <script type="text/javascript">
12     function tom(str) {
13         var obj = {};
14         for (var i = 0; i < str.length; i++) {
15             var s = str[i];
16             if (!obj[s]) {
17                 obj[s] = 1;
18             } else {
19                 obj[s]++;
20             }
21         }
22 
23         var num = 0;
24         var word = "";
25 
26         for (var item in obj) {
27 
28             if (obj[item] > num) {
29                 num = obj[item];
30                 word = item;
31             }
32         }
33         return ("num:" + num + " word:" + word)
34     }
35     var strs = "aabbbccc";
36     var h = tom(strs);
37     console.log(h);
38 </script>
39 </html>

View Code

<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title>@返回字符串中出现次数最多的那个字符和次数2</title>

</head>
<body>
</body>

<script type="text/javascript">
    function tom(str) {
        var obj = {};
        for (var i = 0; i < str.length; i++) {
            var s = str[i];
            if (!obj[s]) {
                obj[s] = 1;
            } else {
                obj[s]++;
            }
        }

        var num = 0;
        var word = "";

        for (var item in obj) {

            if (obj[item] > num) {
                num = obj[item];
                word = item;
            }
        }
        return ("num:" + num + " word:" + word)
    }
    var strs = "aabbbccc";
    var h = tom(strs);
    console.log(h);
</script>
</html>