Adding a Javascript function dynamically and calling it in real-time

Question

Adding a Javascript function dynamically and calling it in real-time

After a click event on the page, I use ajax to retrieve a block of html and script. Although I can successfully append the script element to the head element, WebKit based browsers are not recognizing it as a script (meaning I am unable to call a function defined in the appended script).

When examining the Chrome Developer Tools, I noticed that the dynamic script node appears different from a non-dynamic one. A non-dynamic script has a text child element which I have been struggling to replicate for the dynamic script.

Are there any suggestions or more effective ways to achieve this? My main goal is to avoid loading unnecessary html and script until a user clicks on a specific tab, at which point the relevant content (including script) would be loaded. Thank you!

javascript ajax dynamic-loading

Answer 1

Answer №1

One potential solution is to utilize jQuery, which offers a function known as .getScript that can dynamically load the JavaScript in a reliable manner. This method has been tested and proven to work seamlessly across various popular web browsers.

Answer 2

One potential solution is to utilize jQuery, which offers a function known as .getScript that can dynamically load the JavaScript in a reliable manner. This method has been tested and proven to work seamlessly across various popular web browsers.

Answer 3

Answer №2

Why not try implementing a function that filters out any potentially harmful script tags when processing data received from the server? Remember to validate and sanitize the content before performing any evaluation.

Answer 4

Why not try implementing a function that filters out any potentially harmful script tags when processing data received from the server? Remember to validate and sanitize the content before performing any evaluation.

Answer 5

Answer №3

When utilizing a library like jQuery, it's best to utilize the built-in methods for achieving this task.

If you're not using a library like jQuery, you can append it to the document instead of the head in the following manner:

document.write("<scr" + "ipt type=\"text/javascript\" src=\"http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js\"></scr" + "ipt>");

I must admit, I'm unsure why the script tag is split up like that, but many examples follow this convention so there must be a valid reason behind it.

Remember to consider the fact that loading the script may take some time, so after appending it to the body, set up a timer to check if the script has finished loading. This can be done by performing a typeof check on any global variable exported by the script.

Alternatively, you could use an eval() on the actual javascript body, but there are potential drawbacks to this approach.

In general, I recommend relying on the browser cache to handle this process and load the javascript on the page where your tabs are located. Avoid using onload events and instead trigger any necessary initializers when the tab is displayed.

Answer 6

When utilizing a library like jQuery, it's best to utilize the built-in methods for achieving this task.

If you're not using a library like jQuery, you can append it to the document instead of the head in the following manner:

document.write("<scr" + "ipt type=\"text/javascript\" src=\"http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js\"></scr" + "ipt>");

I must admit, I'm unsure why the script tag is split up like that, but many examples follow this convention so there must be a valid reason behind it.

Remember to consider the fact that loading the script may take some time, so after appending it to the body, set up a timer to check if the script has finished loading. This can be done by performing a typeof check on any global variable exported by the script.

Alternatively, you could use an eval() on the actual javascript body, but there are potential drawbacks to this approach.

In general, I recommend relying on the browser cache to handle this process and load the javascript on the page where your tabs are located. Avoid using onload events and instead trigger any necessary initializers when the tab is displayed.

Adding a Javascript function dynamically and calling it in real-time

Answer №1

Answer №2

Answer №3

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