Call function with argument in event

问题

I have an input, and attached a change event to it. In that change event I called a function. Here's the code:

textInput.change(myFunction);

That works fine. But I want to pass a parameter to it. myFunction('arg') When I do that, the function calls itself right away, and not when there's a change event.

How can I call a function to the change event with arguments?

回答1:

First, it's onchange.

Either bind the function:

textInput.onchange = myFunction.bind(this, 'a');

Or, if you don't want to explicitly use bind, just put the call to the function in the function onchange calls:

textInput.onchange = function () {
  myFunction('a');
};

回答2:

textInput.change(myFunction.bind(textInput, 'arg'));

function myFunction(arg1, event) {}

回答3:

I would just pass an anonymous function like this:

textInput.change(function(){
  myFunction('arg');
});

来源：https://stackoverflow.com/questions/34143802/call-function-with-argument-in-event