js如何统计字符或字符串在一个字符串的频率(出现次数)
let str = 'abccccccdddww'
function countNums(parentStr, childStr) {
return parentStr.split(childStr).length - 1
}
console.log(countNums(str, 'cc'))//3
这是我的签名
let str = 'abccccccdddww'
function countNums(parentStr, childStr) {
return parentStr.split(childStr).length - 1
}
console.log(countNums(str, 'cc'))//3