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Editorial Team
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Asked: 2026-06-17T08:54:36+00:00

Is it possible to call JS code before a page loads (or before other

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Is it possible to call JS code before a page loads (or before other javascript code is called on the page)? For example: Using webbrowser control, I navigate to “http://google.com”, but before any js code on google is executed, I’d like to do something like “alert(‘one moment!’);”.

Any ideas as to how I can accomplish this? I’d guess that I have to somehow modify the html before it fully loads, add the js function, then execute it using invokescript, but not sure how I’d go about that.

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1 Answer

  1. Editorial Team

    My first suggestion is to use scripts inside the <head> tag:

    <body>
    <head>
    <script type="text/javascript">
        // ...
    </script>

    You could use jQuery:

    $(document).ready(function()
{
    // ...
});

    Or: 

    window.onload = function()
{ 
    // ...
}

    In any case you have to make a special effort not to do this kind of things. It’s a very bad practice, especially if it involves user interaction.

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