Tips for breaking out of an infinite loop while loading HTML containing a carousel into a blank <div> within another HTML file using jQuery's $(document).ready() function

Currently, I am studying HTML, CSS, Bootstrap 4, jQuery3, and JavaScript (ES6+), and to enhance my skills, I have devised an exercise for practice and consolidation.

I have created 4 HTML files, all featuring responsive design based on Bootstrap 4:

  • index.html contains a Jumbotron, Grid System, Navbar, and Modal Login.
  • main.html features 3 cards with images, titles, text, and buttons.
  • about.html simply showcases the title "about".
  • contact.html displays the title "contact".

In index.html, the Navbar consists of a logo and 3 items: About, Contact, and a modal for login. Clicking on "About" loads about.html, clicking on "Contact" loads contact.html, and clicking on the logo loads main.html. The functionality for these interactions is already implemented.

Now, I want to add complexity by loading main.html automatically when the page initially loads using jQuery's $(document).ready(..).

When I uncomment a call to loadMainHtml() in script.js, main.html loads but flashes and the carousel malfunctions. However, clicking on the logo works fine.

What could be causing this issue? Any assistance would be highly appreciated.

Below are the respective HTML, CSS, and JS files:

index.html

... [HTML code] ... 

main.html

... [HTML code] ... 

about.html

... [HTML code] ... 

contact.html

... [HTML code] ... 

style.css

... [CSS code] ... 

script.js

... [JS code] ... 

Replacing the call to loadMainHtml() with $.get() also yields the same result. The following snippet demonstrates how I used $.get() as an alternative:

... [Additional JS code using $.get()] ... 

Answer №1

Your sub pages contain the JavaScript code, causing you to reload all of your JavaScript into the #loadHtml container and running loadMainHtml() in an infinite loop. It would be best if your sub pages only contained the HTML fragments to inject, rather than an entire HTML file.

In main.html, make sure to remove everything outside of the body tags, as well as any unnecessary CSS and JavaScript. When inspecting the #loadHtml element with your current script, you will notice an entire HTML file loading into it and executing another copy of your script.js

After loading the content and placing it on the page, any new components that require JavaScript should be initialized in the callback function. For example:

// Activate Carousel
function loadMainHtml() {
    $("#loadHtml").load("main.html", function(strResponse, strStatus, xhr){
        if (strStatus == "error") {
            alert("Error: " + xhr.status + ": " + xhr.statusText);
        }
        $("#myCarousel").carousel(); 
    });
}

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