freeCodeCamp/guide/chinese/certifications/javascript-algorithms-and-d.../basic-javascript/count-backwards-with-a-for-.../index.md

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Count Backwards With a For Loop 用For循环向后计数

用For循环向后计数

这是一个例子:

// Example 
 var ourArray = []; 
 
 for (var i = 10; i > 0; i -= 2) { 
  ourArray.push(i); 
 } 
 
 // Setup 
 var myArray = []; 
 
 // Only change code below this line. 

提示1

  • 为myArray创建一个新的for循环

提示2

  • 从9之前的第一个奇数开始

SPOILER警告解决方案

var ourArray = []; 
 
 for (var i = 10; i > 0; i -= 2) { 
  ourArray.push(i); 
 } 
 
 // Setup 
 var myArray = []; 
 
 // Only change code below this line. 
 for (var i = 9; i > 0; i-=2){ 
  myArray.push(i) 
 }