JavaScript ---案例(统计字符出现次数)
统计字符出现次数
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<script>
var str = "abcabcabbbbbbbbbbbb"
var obj = {}
for(var i=0;i<str.length;i++){
console.log(str[i])
var key = str[i]
if(obj[key]){
obj[key]++
}else{
obj[key] = 1
}
}
console.log(obj)
</script>
</body>
</html>
原文地址:https://blog.csdn.net/weixin_58694594/article/details/142425701
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