freeCodeCamp/guide/chinese/certifications/javascript-algorithms-and-data-structures/basic-javascript/accessing-object-properties-with-variables/index.md

title	localeTitle
Accessing Object Properties with Variables	使用变量访问对象属性

使用变量访问对象属性

这是一个可行的解决方案，以防您遇到困难：

// Setup 
 var testObj = { 
  12: "Namath", 
  16: "Montana", 
  19: "Unitas" 
 }; 
 
 // Only change code below this line; 
 
 var playerNumber = 16;       // Change this Line 
 var player = testObj[playerNumber];   // Change this Line