Repeating pattern in Javascript

Question

How would I repeat the transform pattern below?

BoxesFx.prototype._setTransforms = function() {
    this.transforms = {
        'effect-1' : {
            'next' : [
                'translate3d(0, ' + (win.height/2+10) + 'px, 0)', 
                'translate3d(-' + (win.width/2+10) + 'px, 0, 0)', 
                'translate3d(' + (win.width/2+10) + 'px, 0, 0)',
                'translate3d(0, -' + (win.height/2+10) + 'px, 0)', 
            ],
            'prev' : [
                'translate3d(' + (win.width/2+10) + 'px, 0, 0)',
                'translate3d(0, ' + (win.height/2+10) + 'px, 0)',
                'translate3d(0, -' + (win.height/2+10) + 'px, 0)',
                'translate3d(-' + (win.width/2+10) + 'px, 0, 0)'
            ]
        }}}

Basically, I am trying to have :

'translate3d(0, ' + (win.height/2+10) + 'px, 0)', 
'translate3d(-' + (win.width/2+10) + 'px, 0, 0)', 
'translate3d(' + (win.width/2+10) + 'px, 0, 0)',
'translate3d(0, -' + (win.height/2+10) + 'px, 0)'

repeat n amount of times, we can say n will be 3, without copying and pasting it in 3 times. Is there a way to duplicate an array? I feel like I may be confusing.. hope I explained it well

Answer 1

Just define the array outside

var translate =[
   'translate3d(0, ' + (win.height/2+10) + 'px, 0)', 
   'translate3d(-' + (win.width/2+10) + 'px, 0, 0)', 
   'translate3d(' + (win.width/2+10) + 'px, 0, 0)',
   'translate3d(0, -' + (win.height/2+10) + 'px, 0)', 
];

BoxesFx.prototype._setTransforms = function() {
    this.transforms = {
        'effect-1' : {
            'next' : translate,
            'prev' : translate
        }}}

The two arrays you have aren't the same, but I'm assuming they could be, as you can't reference an array twice and get two completely different arrays ?

If you need an actual new copy of the array each time, you can do

'next' : translate.slice(0)

instead