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Editorial Team
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Asked: 2026-06-08T20:10:15+00:00

I have the following javascript – function onLoad() { if (!(document.applets && document.VLVChart &&

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I have the following javascript –

function onLoad() {
    if (!(document.applets && document.VLVChart && document.VLVChart.isActive())) {
        setTimeout('onLoad()', 200);
        return;
    }
    objChart = document.VLVChart;
    PollEvent();
}

function fan() {
    objChart.reorganize();
}

And then when the HTML page is loaded –

<body onLoad="onLoad()">

and have a button within the HTML that execute the fan() function –

<input type='button' value='Fan' onClick='fan();'>

Is it possible for me to activate the fan() function within the onload event so that a user does ont have to click the button?

EDIT
After trying the provided answers, on debugging the code breaks on the line –

objChart.reorganize();

Within the fan() function with the error –

SCRIPT5007: Unable to get value of the property 'reorganize': object is null or undefined

This is odd as when I manually click the button on the page, the function works fine.

Solution
After much head scratching I have realised that I was trying to load the fan() function before the page (and more specifically the objChart) had fully loaded. Hence why adding the function in the onLoad event was not working. I added a setTimeout –

function Fan()
{
setTimeout(function(){objChart.reorganize();},3000);
}
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1 Answer

  1. Editorial Team
    <body onload='onLoad(); fan();'>...

    However inline JS is best avoided and you would do well to begin looking into centralised event management. There are various advantages to this.

    An answer I wrote yesterday to another question outlines why this is. Something like jQuery makes this trivial if it’s new for you.

    $(function() {
    $('body').on('load', function() {
        onLoad();
        fan();
    });
});
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