问题：
var str1 = "abcdabcabcaabeeeeeee";
var str2 = "fhjdiovjdasklgudsaklfgdasklfjadkslfds";
定义成一个函数，函数接受一个参数，统计该参数，每个字符各出现了多少次(统计字符串中，每个字符各出现了多少次)
打印出出现次数最多的字符，出现了几次
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<script>
var str1 = "abcdabcabcaabeeeeeee";
var str2 = "fhjdiovjdasklgudsaklfgdasklfjadkslfds";
var sum = 0;
var arr = [];
function count(str1) {
for (var i = 0; i < str1.length; i++) {
var arr1 = str1.split('');
if (arr.indexOf(arr1[i]) == -1) {
arr.push(arr1[i]);
}
}
console.log(arr1)
for (var j = 0; j < arr.length; j++) {
for (var m = 0; m < arr1.length; m++) {
if (arr[j] == arr1[m]) {
sum += 1;
}
}
console.log(arr[j] + '次数为：' + sum);
sum = 0;
}
}
count(str2);
</script>
</body>
</html>
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