Multiple methods to solve JavaScript Array Problems

A1 = ['020', '021 ',... '025',...];
A2 = ['shanghai', 'tianjin ',... Nanjing,...];
The length is the same as the length, and corresponds to one by one. How can we get the A2 Nanjing in A1?

I tried a method, but I used a lot of eval and a loop, and I don't feel very good:
[Ctrl + A select all Note: If you need to introduce external JS, You need to refresh it to execute]

This is an array implementation method.
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tips
If I complete similar functions, I will not select an array;
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