javascript之如何一次存储数组中的两个值_编程设计

2025年05月04日2898°冷暖

如何将此代码从 python 复制到 javascript:

myList = [1,2] 
a,b = myList[0], myList[1] 
 
print(a) # output 1  
print(b) # output 2

请您参考如下方法:

一种解决方案是使用 destructuring assignment :

let myList = [1, 2]; 
let [a, b] = myList; 
 
console.log("a is: " + a); 
console.log("b is: " + b);

.as-console {background-color:black !important; color:lime;} 
.as-console-wrapper {max-height:100% !important; top:0;}

如果您需要在数组的特定索引处获取一些特定元素，您可以这样做:

let myList = [3, 5, 1, 4, 2]; 
let [a, b] = [myList[2], myList[4]]; 
 
console.log("a is: " + a); 
console.log("b is: " + b); 
 
// Or ... 
 
let myList2 = [3, 5, 1, 4, 2]; 
let {2: c, 4: d} = myList; 
 
console.log("c is: " + c); 
console.log("d is: " + d);

.as-console {background-color:black !important; color:lime;} 
.as-console-wrapper {max-height:100% !important; top:0;}