事件阻止默认

Question

I have function below

function someName(e){
   e.preventDefault();
   $('#someCont').dialog({
     width:200,
     height:auto,
     modal:true
   })
}

And I am using it like

HTML

<a href="#" onclick="someName()">Link Name </a>

but in browser it throws an error "e is not defined". Can anybody suggest where I am doing wrong? the anchor tag could be more than 1

Answer 1

bind a click function via jquery rather than putting it inline

(function($){
    $(function() {
        function someName(e) {
            e.preventDefault();
        }

        $('a').click(function(e) {
            someName(e);
        });
    });
})(jQuery);

or add the parameter in the function:

onClick="someName(e)"

Answer 2

You need to pass event object

<a href="#" onclick="someName(event)">Link Name </a>

Alternative approach could be if you do not use inline event and assign some id or class to anchor and use that to bind event.

HTML

<a href="#" id="a1">Link Name </a>

Javascript

$('#a1').click(function(e){
  e.preventDefault();
   $('#someCont').dialog({
     width:200,
     height:auto,
     modal:true
   })
});

Answer 3

In function someName(e) , e is an event object. So whenever you are calling this function, you should pass window event object an argument like given below:

<a href="#" onclick="someName(event)">Link Name </a> // Here I have passed this object 

Otherwise, you'll get the same error 'e not defined'