题解 | #获取指定字符串#
判断是否符合指定格式
http://www.nowcoder.com/practice/eb86f08c478749868a01861f5ddad28b
function matchesPattern(str) {
let arr = str.split("-")
console.log(arr)
if(arr.length>3){
return false
}
let a = parseInt(arr[0])
let b = parseInt(arr[1])
let c = parseInt(arr[2])
console.log(a,b,c)
if(isNaN(a) || isNaN(b)||isNaN(c)){
return false
}
console.log(true)
if(arr[0].length!=3 || arr[1].length!=3 || arr[2].length!=4){
return false
}
return true
}
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