= 0; i--) {newStr += str.charAt(i);}return newStr;}reverse。javaScript|javaScript reverse a string。" />

javaScript|javaScript reverse a string

【javaScript|javaScript reverse a string】question: give a string example "hello" output "olleh";

resolve 1: function reverseStr(str) { let newStr = ""; for(let i = str.length-1; i >= 0; i--) { newStr += str.charAt(i); } return newStr; }reverseStr("hello"); //print olleh

resolve 2: function reverseStr(str) { let strArray = str.split(""); strArray.reverse(); return strArray.join(""); }reverseStr("hello"); //print olleh

    推荐阅读