Need to hook into a javascript function call, any way to do this?

by

A more complete method will be:

var old = UIIntentionalStream.instance.loadOlderPosts;
UIIntentionalStream.instance.loadOlderPosts = function(arguments) {
    // hook before call
    var ret = old.apply(this, arguments);
    // hook after call
    return ret;
};

This makes sure that if loadOlderPosts is expecting any parameters or using this, it will get the correct version of them as well as if the caller expects any return value it will get it

More Related Contents:

  1. How to pass parameters rendered from backend to angular2 bootstrap method
  2. Is it correct to use JavaScript Array.sort() method for shuffling?
  3. async/await always returns promise
  4. How can I create an Asynchronous function in Javascript?
  5. Recursive matching with regular expressions in Javascript
  6. Compare two Javascript Arrays and remove Duplicates
  7. Changing element style attribute dynamically using JavaScript
  8. Assign variable in if condition statement, good practice or not? [closed]
  9. Get decimal portion of a number with JavaScript
  10. How to convert CSV to JSON in Node.js
  11. How to block for a javascript promise and return the resolved result? [duplicate]
  12. Javascript Image Url Verify
  13. How can I make var a = add(2)(3); //5 work?
  14. Strange JavaScript idiom – what does “/xyz/.test(function(){xyz;})” do?
  15. jQuery click function only works on first element
  16. init state without constructor in react
  17. javascript named function expressions – scope accessibility [duplicate]
  18. make canvas as wide and as high as parent
  19. Opening a file in local file system in javascript
  20. What does immutable mean?
  21. How to push object to array from for loop properly in JavaScript?
  22. Object.defineProperty in ES5?
  23. setting innerHTML with a script inside [duplicate]
  24. How can I know whether refresh button or browser back button is clicked in Firefox? [duplicate]
  25. React suspense/lazy delay?
  26. show/hide html table columns using css
  27. Angular2 – catch/subscribe to (click) event in dynamically added HTML
  28. How to add a Facebook “Like” button to an AJAX driven page
  29. Extract keyword from Google search in Javascript
  30. jquery: $(window).scrollTop() but no $(window).scrollBottom()

Leave a Comment