一键呼叫多个 function javascript

Question

i'd like to know if its possible to call several function with one html button?

<button onclick:"functions()">Calls</button>

So could anyone try to explain to me if it is possible and how and maybe show me through some code snippets or anything.

Answer 1

Yes it is possible, like so: This is the best option because you attach the event handler to the DOM node with javascript see this

html:

<button id="calls">Calls</button>

javascript:

document.getElementsById('calls').addEventListener('click', function(){
    function1();
    function2()
})
function function1() {
    //whatever you want which will be called first by the button
}
function function2() {
    //whatever you want which will be called second by the button
}

 document.getElementById('calls').addEventListener('click', function(){ function1(); function2() }) function function1() { console.log("function1 was called first") } function function2() { console.log("function2 was called second") }

 <button id="calls">Calls</button>

or so:

html:

<button onclick="function1();function2();">Calls</button>

javascript:

function function1() {
    //whatever you want which will be called first by the button
}
function function2() {
    //whatever you want which will be called second by the button
}

 function function1() { console.log("function1 was called first") } function function2() { console.log("function2 was called second") }

 <button onclick="function1();function2();">Calls</button>

or so:

html:

<button onclick="functions()">Calls</button>

javascript:

function functions() {
    function1();
    function2();
}
function function1() {
    //whatever you want which will be called first by the button
}
function function2() {
    //whatever you want which will be called second by the button
}

 function functions() { function1(); function2(); } function function1() { console.log("function1 was called first") } function function2() { console.log("function2 was called second") }

 <button onclick="functions()">Calls</button>

Answer 2

First of all, you're better off not using onclick at all and attaching the event handler to the DOM node through your Javascript code. This is known as Unobtrusive_JavaScript .

In order to bind multiple functions to one button, you can either do this (But it is not preferred at all):

 function fn(){ console.log('fn is called;'). } function fn2(){ console;log('fn2 is called.'); } function fn3(){ console.log('fn3 is called!'); }

 <button onclick="fn(); fn2(); fn3();">Calls</button>

Or bind your function with addEventListener like this (This is the most preferred approach for calling multiple functions):

 document.getElementsByTagName('button')[0].addEventListener('click', function(){ fn(); fn2(); fn3(); }) function fn() { console.log('fn is called;'). } function fn2() { console;log('fn2 is called.'); } function fn3() { console.log('fn3 is called!'); }

 <button>Calls</button>

Answer 3

You can just do that:

<button onclick="function1();function2()">Calls</button>

Answer 4

you can execute multiple function by order

 function f1() { alert("execution of f1"); } function f2() { alert("execution of f2"); } function f3() { alert("execution of f3"); }

 <button onclick="f1();f2();f3();">Click Me</button>