I'm using Google Closure's event handling like this:

goog.events.listen(this.contentElement, goog.events.EventType.CLICK, this.openEditor);

But I need to pass a string as an argument into the function which would be this.openeditor

I've looked through the documentation but can't seem to work out how to do this, anyone got any ideas?

Thanks!

I'm using Google Closure's event handling like this:

goog.events.listen(this.contentElement, goog.events.EventType.CLICK, this.openEditor);

But I need to pass a string as an argument into the function which would be this.openeditor

I've looked through the documentation but can't seem to work out how to do this, anyone got any ideas?

Thanks!

• javascript
• events
• click
• google-closure
• google-closure-library

• Are you trying to fire the event, or are you trying to make it so that when the event is fired, this.openEditor will be passed a certain string? – Joshua Dwire Commented Nov 27, 2012 at 13:00
• The latter. The function will be called whilst passing the String. – A_Porcupine Commented Nov 27, 2012 at 13:23

2 Answers 2

Try using goog.partial, like this:

goog.events.listen(this.contentElement, goog.events.EventType.CLICK, goog.partial(this.openEditor,'the string you want to pass it'));

When this.contentElement is clicked, this.openEditor will be called. The fist parameter will be the string and the second parameter will be an event object.

Above answer from Joshua is right - just want to add some more info to it.

goog.bind vs goog.partial defined in base.js

In goog.partial the context is set to current context - it returns a function which gets executed in current context.

goog.partial = function(fn, var_args) {
  var args = Array.prototype.slice.call(arguments, 1);
  return function() {
    // Clone the array (with slice()) and append additional arguments
    // to the existing arguments.
    var newArgs = args.slice();
    newArgs.push.apply(newArgs, arguments);
    return fn.apply(this, newArgs);
  };
};

Where as in goog.bind ( which actually checks for native implementation of bind) and you can pass the context as second parameter

goog.bind = function(fn, selfObj, var_args) {
  //defined in base.js  
  ....
  ....
  return function() {
    return fn.apply(selfObj, arguments);
  };

}