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Editorial Team
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Asked: 2026-06-02T09:18:34+00:00

Using phonegap, jquery. Is it possible to detect touches on two different elements at

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Using phonegap, jquery.
Is it possible to detect touches on two different elements at the same time ?

I’m creating something that requires two images ( button-left and button-right ) to be pressed
at the same time before another event it triggered.

The following is not an exhaustive list of code, but should provide insight into what im trying to achieve

<head>

<script type="text/javascript" charset="utf-8" src="phonegap-1.1.0.js"></script>
<script type="text/javascript" charset="utf-8" src="jq.js"></script>
<script type="text/javascript" src="jquery.stopwatch.js"></script>

<script>
    var w = new Stopwatch(updatedisplay, 50);
    var onoff = false;

    $("#button-left, #button-right").unbind("touch",begin);

    function begin() {
        onoff = true;
        w.start();
    }

    function end() {
        w.stop();
        onoff = false;
    }       

    function updatedisplay(watch) {
        var mills = parseInt(watch.getElapsed().milliseconds/10);
        if(mills<10) {
            millis = '0'+mills;
        } else {
            millis = mills;
        }
        document.getElementById('counterValue').innerHTML = watch.toString() + "." + millis;
    }

    function reset() {
        w.stop();
        onoff = false;
        document.getElementById('counterValue').innerHTML = "00:00:00.00";
    }
</script>
</head>

<body onload="onBodyLoad()">
  <div id="counterValue">
    00:00:00.00
  </div>
  <div id="button-left"></div>
  <div id="button-right"></div> 
</body>

::::: CREATED THIS FIX ::::: A BIT UGLY BUT IT WORKS BRILLIANTLY :::::

I found another way around, now this might be a bit ugly.. but it works well …

    $(document).ready(function() {                          
       document.getElementById('button-left').addEventListener('touchstart', nofunc(e), false);
       document.getElementById('button-right').addEventListener('touchstart', nofunc(e), false);
    });

    function vala(val) {
        av = val;
        checkvals();
    }
    function valb(val) {
        bv = val;
        checkvals();
    }
    function checkvals() {
        if(av == 1 && bv == 1) {
            if(onoff == false) {
                begin();
            } else {
                end();
            }
        }
    }

   <div id="button-left" ontouchstart="vala(1)" ontouchend="vala(0)">&nbsp;</div>
   <div id="button-right" ontouchstart="valb(1)" ontouchend="valb(0)">&nbsp;</div>
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1 Answer

  1. Editorial Team

    as above, i found a way to do what i needed… a bit of “reading of manuals” and i came up with this

    $(document).ready(function() {                          
   document.getElementById('button-left').addEventListener('touchstart', nofunc(e), false);
   document.getElementById('button-right').addEventListener('touchstart', nofunc(e), false);
});

function vala(val) {
    av = val;
    checkvals();
}
function valb(val) {
    bv = val;
    checkvals();
}
function checkvals() {
    if(av == 1 && bv == 1) {
        if(onoff == false) {
            begin();
        } else {
            end();
        }
    }
}

     
     

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