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软通乐学-js求字符串中字符串当中那个字符出现的次数多 -冯浩的博客
2022-07-06 09:29:00 【冯浩(grow up)】
使用的函数:charAt():根据位置取字符串
思路:我们通过循环将字符串通过charAt通过下标找到字符,
然后存储到一个对象对象名中,然后找到对象对应的属性值,
如果有这个对象名,就进行加一,
如果没有就设置为1
最后遍历这个对象,就可以得到了
var a = "123abcdefaaaaaaaaaaaaaaaaaaaa";
// 创建一个数组用来储存元素
var obj = new Object();
// 循环整个字符串的的长度
for(var i =0;i<a.length;i++){
// charAt:根据位置取字符串
// 循环去除字符串
var value = a.charAt(i);
console.log(value);
if(obj[value]>0){
obj[value]++;
}else{
obj[value]=1;
}
}
console.log(obj);
for(var j in obj){
console.log(j+"出现的次数"+obj[j]+'次');
};
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