Dynamic variable name syntax

Question

Another newbie question that has me stuck badly.

I have three variables

var state1
var state2
var state3

I need to access one of them on a .click event depending on a property of the clicked object.

How do I access the correct variable? Basically I need to for the variable name by adding "state" and the correct number together.

I will update this post soon with some code in case it's needed.

var backstate1;
var backstate2;
var backstate3;
var currentFrame;

function hotspotHover(){
var currentElement = this;
var daName =this.name;
$("#hotspot" +daName).hover(

    function() { 
    $("img.changeOutline").prop("src", currentElement.outlinesArray[currentFrame]);
    $("#outlines").show(); 
    }, 
    function() { 
    $("#outlines").hide(); 
    }
).click(function() {
    var backstateLevelNumber = currentElement.backStateLevel; //not working
    window['backstate'+ backstateLevelNumber]=currentFrame; //trying to set backstate+number to current frame variable
    hoverClick(currentElement.defaultFrame);
    checkReverse();
    checkSeqLoop();
});

};

where are they declared? what's the code that tries to access them? — Joseph
– Joseph, Commented Aug 2, 2012 at 3:05
I woud use an array for this: var state=[state1, state2, state3] and accessing them by state[number] — mariusnn
– mariusnn, Commented Aug 2, 2012 at 3:06

mariusnn · Accepted Answer · 2012-08-02 03:08:51Z

2

Using an array would solve your problem:

var states = [null, null, null];

Accessing them would then be: (Assuming currentStateId being the current state number)

var currentState = state[currentStateId] //Access state

And for setting:

states[currentStateId] = "State"; //Set State

answered Aug 2, 2012 at 3:08

mariusnn

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Comments

Krycke · Accepted Answer · 2012-08-02 03:05:30Z

0

Add the states as an array:

var states = [ 'state1', 'state2'];
var stateNumber = 0;
var state = states[stateNumber];

answered Aug 2, 2012 at 3:05

Krycke

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4 Comments

Brad Koch Over a year ago

It could be a proper answer if restated.

Krycke Over a year ago

Sorry 'bout that. Tries to restate the answer.

Sony packman Over a year ago

What I still don't seem to grasp is how would I then declare a value for the state1 or state2? I'm trying to do basically this: If clicked object has statelevel==1 then modify the value of state1 to be currentFrame.

Krycke Over a year ago

Can't you use window[ states[number] ] = currentFrame;

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