onclick=”doSomething();doSomethingElse();”
But really, 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.
A link with 1 function defined
Click me To fire some functions
Firing multiple functions from someFunc()
function someFunc() {
showAlert();
validate();
anotherFunction();
YetAnotherFunction();
}