[js] 字符串敏感词替换

设定一个函数,函数有2个参数
参数1: 要屏蔽关键词的原始字符串 ‘abcabcabcabc’
参数2: 要屏蔽的关键词 ‘b’

acacacac

function f2(str1,str2){
            arr = str1.split('')  // ["a", "ca", "ca", "ca", "c"]
            for(var i in arr){
                if(arr[i]===str2){
                    arr[i]='*';
                }
            }
            res = arr.join('') // a*ca*ca*ca*c
            return res
        }

    str1 = 'abcabcabcabc'
        str2  = 'b'
        res = f1(str1,str2)
        console.log(res)

function f1(str1,str2){
            arr = str1.split(str2)  // ["a", "ca", "ca", "ca", "c"]
            res = arr.join('*')  //a*ca*ca*ca*c
            return res
        }

        str1 = 'abcabcabcabc'
        str2  = 'b'
        res = f1(str1,str2)
        console.log(res)