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POCalling functions from within another - javascript
 

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    <p>I'm relatively new to javascript and having a couple of issues that I'm hoping you can help with. I'm utilizing the fabric library with canvas to create an animation of sorts.</p> <p>I have a function that is called when the relevant button is pressed:</p> <pre><code>//for starting the animation startSim.onclick = function(){ //obtain speed value from the control panel. var speed = 10000 / (new Number(speedControl.value)); //stuff //animation process object.animate('top', '+='+canvas.height,{ duration: speed, abort: function(){ var returnedBool; //Pause is pressed, simulation pauses if(pause){ //stuff } //restart required if(restart){ //stuff } //option here to save data? return returnedBool; },//end abort callback onChange: canvas.renderAll.bind(canvas), onComplete: function(){ //stuff } });//end animate callback }; </code></pre> <p>What I'd like to do is call certain other functions while the above animation is active.</p> <p>I know how I'd like to do this using Java or C++ but I can't seem to call the function.</p> <p>I have a display panel that should output various information - as the animation completes variables will change and I'd like them to be output on the screen and be updated as they change.</p> <p>I'm testing with a simple function:</p> <pre><code> function updateInfoPanel(testSpeed){ var test = document.getElementById('currentSpeed'); test.innerHTML = test.innerHTML + testSpeed; } </code></pre> <p>I think I need to call this in the main animate loop, if I call it before it's fine but obviously only displays the variable once. Could someone tell me where I'm going wrong please?</p> <p>I also have a basic collision detection function that works but not within the animate loop and I think these problems are linked.</p> <p>Many thanks for any help.</p> <p>I removed the unnecessary parts of the code to save space.</p> <p>So I've just tried to use a function as the result of onChange:</p> <pre><code>onChange: function(){ canvas.renderAll.bind(canvas); updateInfoPanel(speed); }, </code></pre> <p>This doesn't present syntax errors but the animation no lingers runs although the speed variable does update in the info panel very quickly. :(</p>
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    1. COI may be mistaken but could you simply put your update functions in that `onChange` event?
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    2. COHi @Robb, I tried that but it doesn't seem to like it. Expects a colon but I can't give it one.
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    3. CO@Robb - Hi again, updated question a touch as it feels like I'm getting closer.
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