Javascript – Disable href with jquery/js

javascriptjquery

I am having difficulties in disabling href links through jquery. I am using this method I modified. Can some please advise or help me in figuring this out?
Thank you.

jquery/js

<script>
 $('.next-tab').click(function() {
     $('.st_tab_active').attr('disabled','disabled');
     var tab=  $('.st_tab_active').parent().next().children('a');
     tab.removeAttr('disabled');
     tab.trigger('click');
     return false;
      });
</script>

html

<ul class="st_tabs">
    <li><a href="#st_content_1" class="st_tab" disabled="disabled">Horizontal Tab #1</a></li>
    <li><a href="#st_content_2" class="st_tab" disabled="disabled">Horizontal Tab #2</a></li>
    <li><a href="#st_content_3" class="st_tab" disabled="disabled">Horizontal Tab #3</a></li>
    <li><a href="#st_content_4" class="st_tab" disabled="disabled">Horizontal Tab #4</a></li>
    <li><a href="#st_content_5" class="st_tab" disabled="disabled">Horizontal Tab #5</a></li>
</ul>

Best Answer

You can use preventDefault(); to disable the default behaviour of links (which is, to navigate to the given href).

$("a").click(function(e){
    e.preventDefault(); 
});

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In JavaScript, everything is 'truthy' or 'falsy', and for numbers 0 means false, everything else true. So you could write:

if ($(selector).length)

You don't need that >0 part.

Javascript – Which “href” value should I use for JavaScript links, “#” or “javascript:void(0)”

I use javascript:void(0).

Three reasons. Encouraging the use of # amongst a team of developers inevitably leads to some using the return value of the function called like this:

function doSomething() {
    //Some code
    return false;
}

But then they forget to use return doSomething() in the onclick and just use doSomething().

A second reason for avoiding # is that the final return false; will not execute if the called function throws an error. Hence the developers have to also remember to handle any error appropriately in the called function.

A third reason is that there are cases where the onclick event property is assigned dynamically. I prefer to be able to call a function or assign it dynamically without having to code the function specifically for one method of attachment or another. Hence my onclick (or on anything) in HTML markup look like this:

onclick="someFunc.call(this)"

onclick="someFunc.apply(this, arguments)"

Using javascript:void(0) avoids all of the above headaches, and I haven't found any examples of a downside.

So if you're a lone developer then you can clearly make your own choice, but if you work as a team you have to either state:

Use href="#", make sure onclick always contains return false; at the end, that any called function does not throw an error and if you attach a function dynamically to the onclick property make sure that as well as not throwing an error it returns false.

Use href="javascript:void(0)"

The second is clearly much easier to communicate.

Best Answer

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