CODEWITHSUNDEEP
jquery
ccdavies
ccdavies

Reputation: 1606

Disable keydown until function is complete

I am looking for a way to disable all keycodes until the next() function is complete.

I tried using return false but it didn't work.

nextDown = {};
    $(document).keydown(function(event){
        if(event.keyCode == '39'){
            if (nextDown['39'] == null) {
                next();
                nextDown['39'] = true;
            }
        } 
    });
    $(document).keyup(function(event) {
        nextDown[event.keyCode] = null;
    });

Is there a way bind false against the keydown then after the function is complete unbind?

Upvotes: 2

Views: 129

Answers (3)

Bonomi
Bonomi

Reputation: 2743

what about declare a variable to do so. Does the following code solve your problem?

nextDown = {};
var _lock = false;
    $(document).keydown(function(event){
        if(event.keyCode == '39'){
            if (!_lock && nextDown['39'] == null) {
                _lock = true;
                next();
                nextDown['39'] = true;
            }
        } 
    });
    $(document).keyup(function(event) {
        nextDown[event.keyCode] = null;     
    });


    function next() {
        ...
        _lock = false;
    }

If not, please, provide a jsfiddle example

Upvotes: 2

Spencer May
Spencer May

Reputation: 4505

There is a very easy way to accomplish this. First create a global variable and set it to 0. Then have the cont set to 1 before next() and back to 0 after next() is complete. This will allow you to create if statements where cont == 1 would stop your other functions and cont == 0 would allow them to run.

var cont =  0;

    $(document).keydown(function(event){
        if(event.keyCode == '39' && cont == 0){
            if (nextDown['39'] == null) {
                cont = 1;
                next();
                cont = 0;
                nextDown['39'] = true;
            }
        } 
    });
    $(document).keyup(function(event) {
        if (cont == 0) {
            nextDown[event.keyCode] = null;
        }
    });

Upvotes: 0

Mathieu Labrie Parent
Mathieu Labrie Parent

Reputation: 2596

You have to use a callback to do what you want.

http://api.jquery.com/jquery.callbacks/

Upvotes: 0

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