What is the best way to refresh updated .js files directly from the browser console?

Is it possible to use RequireJS 2 to dynamically reload a recently updated .js file? Let me explain my scenario:

  1. I have a Backbone.js object named Foo with a function called Bar that currently displays an alert with "abc" when called;
  2. In my webpage, I execute Foo.Bar() and receive an alert with "abc"
  3. In my code editor, I modify the function to display an alert with "def" instead of "abc"
  4. Back on the webpage, I open the console and trigger an update function
  5. Upon calling Foo.Bar() again, I now receive an alert with "def"

Appreciate the help!

Answer №1

If you want to access the Chrome console, simply press Ctrl+Shift+J and navigate to the "Console" tab.
Once there, enter the following:

var script = document.createElement("script");
script.src = "Path to JS File";
document.body.appendChild(script); 

This will update the JavaScript file without the need to reload the entire page.

  • The "Path to File" can be:
    1) http/s://yourdomain.com/path/jsfile.js
    2) file://path/jsfile.js - (Local file system)

Note:
The technique mentioned above does not rely on the RequireJS Library.

Answer №2

If you find yourself needing to both load and refresh a JavaScript file, one solution is to create a function in your main JavaScript file like this:

function updateJS(file) {
  var script = document.createElement("script");
  script.src = "/" + file + ".js";
  newWindow = window.open(script.src + "?v=" + Math.random());
  document.body.appendChild(script);
  newWindow.close();
}

Then, you can simply call this function from the console by typing updateJS("myjsfilename").

Using this method will refresh the JavaScript file and ensure that the browser is using the most up-to-date version.

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