如何在JavaScript中使用函数作为另一个函数的参数

Question

<input type="button" id="one" value="1" OnClick='addValue("function(){document.getElementById("one")}")'>

I want to pass the id of this input as argument of addValue function. Where is the mistake here ?

Answer 1

您太复杂了，使用this

<input type="button" id="one" value="1" OnClick='addValue(this.id)'>

Answer 2

First, move the event listener out of the HTML and then you can access the value from the click events target.

document.getElementById('one').addEventListener('click', function(evt) {
    var value = evt.target.value;
    addValue(value);
});

Edit: or use @tymeJV's solution, though I'd recommend getting away from inline events.

Answer 3

If you really want to use function as argument of another function then have a look at anonymous functions http://en.wikibooks.org/wiki/JavaScript/Anonymous_Functions , SetTimeout is a good example, you pass a function as an argument to it to call after specific time.

But I think you can accomplish this without passing function as argument as mentioned in the answer of @tymeJV.