Copy array items into another array

Question

I have a JavaScript array dataArray which I want to push into a new array newArray. Except I don't want newArray[0] to be dataArray. I want to push in all the items into the new array:

var newArray = [];  newArray.pushValues(dataArray1); newArray.pushValues(dataArray2); // ... 

or even better:

var newArray = new Array (    dataArray1.values(),    dataArray2.values(),    // ... where values() (or something equivalent) would push the individual values into the array, rather than the array itself ); 

So now the new array contains all the values of the individual data arrays. Is there some shorthand like pushValues available so I don't have to iterate over each individual dataArray, adding the items one by one?

Answer 1

Use the concat function, like so:

var arrayA = [1, 2]; var arrayB = [3, 4]; var newArray = arrayA.concat(arrayB); 

The value of newArray will be [1, 2, 3, 4] (arrayA and arrayB remain unchanged; concat creates and returns a new array for the result).