Call two functions from same onclick
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
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;"
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();"/>
You can call the functions from inside another function
<input id ="btn" type="button" value="click" onclick="todo()"/>
function todo(){
pay(); cls();
}