CSS / Javascript Show / Hide DIV Using A CSS Class?

I've googled around and found many scripts for hiding and showing DIV contents, as a toggle on button click. But they are work using ID's. I would like to do the same thing BUT I

Solution 1:

Is jquery an option? Hopefully so, because this does what you want:

http://api.jquery.com/toggle/

$(".class").toggle();
or
$(".class").show();  $(".class").hide();

Solution 2:

Most of the jQuery answers should be pretty easy, but seeing as your example is in regular JS, here's how to do it in JS.

Potential downside: browsers that don't support getElementsByTagName. I tested IE7 and it works, but I'm not sure about lower.

var divs = document.getElementsByTagName('div');

var toggle = function() {    
    for (var i = 0, l = divs.length; i < l; i++) {
        if (divs[i].getAttribute('class') == 'problem') 
            if (divs[i].style.display == 'none') divs[i].style.display = '';
            else divs[i].style.display = 'none';
    }
}

document.getElementById('Toggle').onclick = toggle;

Try it out: http://jsfiddle.net/robert/PkHYf/

Solution 3:

As others have said several times, this is easy in jQuery using a jquery selector and the .hide method. However, since you are asking in a general sense and it is a good idea to know how to do it without a framework, that isn't a complete answer.

Here are your options:

1. JQuery Method. Just use jQuery selectors and the .hide() method.

   $(".CLASSNAME").hide()

2. Vanilla JS: Dynamic CSS. One approach is to dynamically append stylesheets to the document head -- you can Alter CSS class attributes with javascript?

3. Vanilla JS: Modify CSS directly:

       var ss = document.styleSheets;
       for (var i=0; i<ss.length; i++) {
           var rules = ss[i].cssRules || ss[i].rules;
   
           for (var j=0; j<rules.length; j++) {
               if (rules[j].selectorText === ".classname") {
                   rules[j].style.visibility = "none";
               }
           }
       }
   

Solution 4:

Wouldn't this just be

$('.classname').hide();

Or group all the elements you want to hide within a container div, and then hide that div.

Solution 5:

Using jQuery:

$(".classname").hide();

where classname is the name of the class.