在jQuery中将数组转换为“关联数组的数组”

Question

I'm trying to do another silly thing in jQuery...

I have a bunch of strings in an array:

[ var1 , var2 , var3 , var4 , var5 , var6 , var7 , ...]

And I want the array to become an "array of associative arrays", with the same index every time... (don't ask me why xD):

[ { 'variable' : var1 } , { 'variable' : var2 } , { 'variable' : var3 } , ... ]

The index 'variable' is the same every time.

How does one do this? My attempt (below) isn't working...

 var stringarray = ['var1', 'var2', 'var3', 'var4']; var assarray = {}; $.each(stringarray, function(index, value) { assarray[index] = { 'variable': value }; }); document.write(JSON.stringify(assarray)) 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> 

Answer 1

Basically because assarray is not an array. It needs to be:

var assarray = [];

Also you could do:

var assarray = $.map(stringarray, function(val){ return {variable:val};});

Answer 2

Yeah, definitely use map . But I'd just use use the built-in since ES5:

var assarray = stringarray.map(function(element){ 
   return { variable: element };
});

Check out the docs here . Should work on every browser since IE9.