Animate Link在点击时下划线而不是悬停？

Question

Having trouble getting my head around how I can recreate this effect as an on click as opposed to on hover?

I'm not great with jQuery so having trouble working out how I can trigger this to happen on click. I came across this website to help create the effect I'm going for (Underline Left to Right). The demo can be seen in the following link...

http://bradsknutson.com/blog/css-sliding-underline/

I'm currently using the following js to fade in a div and I want the line to slide in at them same time.

New jsfiddle - http://jsfiddle.net/tfgou78c/4/

JS:

$(function() {
    $('.submit_button').click(function() {
        var elem = $('.form_wrap');
        if (elem.css('display') == 'none') {
            elem.fadeIn(1750);
        }
        else {
            elem.fadeOut(1750);
        }
    });
});

CSS:

.form_wrap {
 display: none;
 }

/* sliding underline LEFT TO RIGHT */
.sliding-u-l-r {
display: inline-block;
}

.sliding-u-l-r:after {
content: '';
display: block;
height: 3px;
width: 0;
background: transparent;
transition: width .5s ease, background-color .5s ease;
}

.sliding-u-l-r:hover:after {
width: 100%;
background: blue;
}

Any help would be greatly appreciated.

Answer 1

Since this method are using the CSS event :hover you can't change that for click just on the code because there is no method for click on CSS. You can have:

1. You tag this with Jquery so you can change the CSS match to:

    .sliding-ulr:hover:after 

   to

    .sliding-ulr.clicked:after 

   And then with Jquery:

    $('.sliding-ul-r').on('click',function(){ $(this).toggleClass('clicked'); }) 

   Check this Demo Fiddle

Answer 2

Something like http://jsfiddle.net/y4wuurt9/ ?

 $('.underline-thing').on('click', function(e) { e.preventDefault(); $(this).addClass('lined'); }); 

 .underline-thing { position: relative; text-decoration: none; } .underline-thing:after { content: ""; position: absolute; bottom: 0; left: 0; width: 0; height: 3px; background: blue; -webkit-transition: width 250ms ease-in-out; -moz-transition: width 250ms ease-in-out; -o-transition: width 250ms ease-in-out; transition: width 250ms ease-in-out; } .underline-thing.lined:after { width: 100%; } 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <a class="underline-thing" href="#">Test Link</a> 

Answer 3

On click you wouldn't want it to stay would you?
Here's a pure css version that gets underlined on click:

 a:active{ text-decoration:underline; } a{ text-decoration:none; } 

 <a href="#">click me and hold!</a>