正则 重复项最多得子项

<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>无标题文档</title>
<script>
    window.onload = function ()
    {    
        var str = 'aagsdaafgdgdfgafdghsasdssaa';
        var arr = str.split('');
        str = arr.sort().join('');
        var value = '';
        var index = 0;
        var re = /(w)1+/g;
        
        str.replace(re,function ($0,$1)
        {
            if(index < $0.length)
            { 
                index = $0.length;
                value = $1;
            }
            
        })
        
        alert('最多的值：'+ value + '重复次数' + index );
    }
</script>
</head>

<body>
</body>
</html>
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原文地址：https://www.cnblogs.com/mayufo/p/4320484.html