javascript - Class method with google maps event listener run external function -

sorry question title, hard find one...

i have class handle google maps , 1 of methods create custom control:

// method: map.prototype.addbutton = function (order, onclickevent) {     var = this;     var buttonui = $.get('/templates/order-button.html', function (data) {         var button = $(data)[0];         $(button).attr('id', order.id);         $(button).find('span:eq(1)').text('#' + order.id);          google.maps.event.adddomlistener(button, 'click', function() {             onclickevent;         });     }); } 

as can see added click event. click should open modal window.

when use method i'm doing:

var map = new map(); map.addbutton(order, openmymodal()); 

unfortunately open modal page load.

i tried well:

var map = new map(); map.addbutton(order, function() {   openmymodal(); }); 

so, question is, how can attach open modal window function google maps event listener?

var map = new map(); map.addbutton(order, openmymodal()); 

should be

var map = new map(); map.addbutton(order, openmymodal); 

you want pass function, not result of function second parameter

and

    google.maps.event.adddomlistener(button, 'click', function() {         onclickevent;     }); 

should be

    google.maps.event.adddomlistener(button, 'click', function() {         onclickevent();     }); 

here want execute passed in function