functiongetDay(){var day =newDate()var y = day.getFullYear();var m = day.getMonth()+1;var d = day.getDate()
d = d >10? d :'0'+ d
console.log(y +"-"+ m +"-"+ d);}
判斷是否迴文字符串
方法一:
functionisPalindrome(param){if(!param)returnfalseif(typeof param !=='string')returnfalselet length = param.split('').length
// console.log(length);let mid = Math.floor(length /2)let l =[]let r =[]if(length %2===0){// 字符串長度爲偶數for(let i =0; i < mid; i++){
l.push(param[i])}for(let j = mid; j < length; j++){
r.push(param[j])}
r = r.reverse()// console.log(l);// console.log(r);return l.join('')=== r.join('')}else{// 字符串長度爲奇數for(let i =0; i < mid; i++){
l.push(param[i])}for(let j = mid +1; j < length; j++){
r.push(param[j])
r = r.reverse()}// console.log(l);// console.log(r);return l.join('')=== r.join('')}}// 調用
console.log(isPalindrome('12344321'));