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Asked: 2026-05-22T02:22:39+00:00

I wrote some jQuery code in an external file, with the goal to match

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I wrote some jQuery code in an external file, with the goal to match each <select> tag in the page where the script is included.

My goal would be to include the script reference in the <head> tag of the target pages and “run” the jQuery code without having to call any function.

I have seen several examples with external jQuery code, but all call a function to execute the (external) code.

If I use “plain” javascript, like simple alerts, they are executed without problem. When I try with my jQuery code, nothing happens.

Here is my external jQuery file:

$(function() {     
    $("select").focus(function() {
        alert('selected...');
    }).change(function() {
        alert('changed...');  
    })   
});

Even if I do not use $(function() at the beginning I always get the exception “Object Expected” at the first occurrence of $, while even leaving $(function() and inside the brackets a simple alert it works.

How the external file should be developed?

I tested the external script inline in a test page and it works fine.

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1 Answer

  1. Editorial Team

    It makes no difference where your code is written, either inline in your HTML page, or included via <script src='...'>.

    The issue then would be that jQuery has not yet been included by the time your code is being executed. Take a look at the order which you’re including your files, and ensure that jQuery comes before this code which relies upon it.

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