How to clone a Javascript Array of Objects?

Question

I have a result set which is an array of objects. I need to clone this so I can make changes to it, without touching the original data.

var data = w2ui.grid.         


        

Answer 1

This is because an array is held as a pointer, so setting a new variable just points to the same array.

The easiest way I know of is with slice...

var data = w2ui.grid.records.slice(0);

This creates a new array with all of the original values in, because you're slicing from the first one (0).

If you need a deep clone, because your array contains objects/arrays too, try this...

https://github.com/pvorb/clone