Call two functions from same onclick [duplicate]

问题:

This question already has an answer here:

• How to call multiple JavaScript functions in onclick event? 9 answers

HTML & JS

How do I call 2 functions from one onclick event? Here's my code

 <input id ="btn" type="button" value="click" onclick="pay() cls()"/>

the two functions being pay() and cls(). Thanks!

回答1:

Add semi-colons ; to the end of the function calls in order for them both to work.

 <input id="btn" type="button" value="click" onclick="pay(); cls();"/>

I don't believe the last one is required but hey, might as well add it in for good measure.

Here is a good reference from SitePoint http://reference.sitepoint.com/html/event-attributes/onclick

回答2:

You can create a single function that calls both of those, and then use it in the event.

function myFunction(){
    pay();
    cls();
}

And then, for the button:

<input id="btn" type="button" value="click" onclick="myFunction();"/>

回答3:

You can call the functions from inside another function

<input id ="btn" type="button" value="click" onclick="todo()"/>

function todo(){
pay(); cls();
}

回答4:

Binding events from html is NOT recommended. This is recommended way:

document.getElementById('btn').addEventListener('click', function(){
    pay();
    cls();
});

回答5:

With jQuery :

jQuery("#btn").on("click",function(event){
    event.preventDefault();
    pay();
    cls();
});

回答6:

Just to offer some variety, the comma operator can be used too but some might say "noooooo!", but it works:

<input type="button" onclick="one(), two(), three(), four()"/>

http://jsbin.com/oqizir/1/edit

回答7:

onclick="pay(); cls();"

however, if you're using a return statement in "pay" function the execution will stop and "cls" won't execute,

a workaround to this:

onclick="var temp = function1();function2(); return temp;"

回答8:

put a semicolon between the two functions as statement terminator.

回答9:

Try this

<input id ="btn" type="button" value="click" onclick="pay();cls()"/>