I\'ve got a class with the display set to none
I\'d like to in Javascript now set it to inline
I\'m aware I can do this with an id
wit
To change CLASS you need to edit document stylesheets
[...document.styleSheets[0].cssRules].find(x=> x.selectorText=='.box')
.style.display='inline';
[...document.styleSheets[0].cssRules].find(x=> x.selectorText=='.box')
.style.display='inline';
.box {
margin: 10px;
padding: 10px;
background: yellow;
display: none
}
<div class="box" >My box 1</div>
<div class="box" >My box 2</div>
<div class="box" >My box 3</div>
You can use getElementsByClassName
in which you'll get an array of elements. However this is not implemented in older browsers. In those cases getElementsByClassName
is undefined
so the code has to iterate through elements and check which ones have the desired class name.
For this you should use a javascript framework such as jQuery, mootools, prototype, etc.
In jQuery it could be done with a one-liner as this:
$('.theClassName').css('display', 'inline')
Although this is long gone, here a few remarks:
Using display: inline
to make things visible again may spoil the
page flow. Some elements are displayed inline, others block etc. This
should be preserved. Hence, only define a .hidden style and remove it
to make things visible again.
How to hide: There are (at least) two ways to hide elements, one is
the above mentioned display: none
which basically makes the element
behave as if it was not there, and the visibility: hidden
which
renders the element invisible but keeps the space it occupies.
Depending on what you want to hide, the visibility may be a better
choice, as other elements will not move when showing/hiding an
element.
Adding/removing classes vs. manipulating CSS rules: The result is quite different. If you manipulate the CSS rules, all elements having a certain CSS class are affected - now and in the future, i.e. new elements dynamically added to the DOM are also hidden, whereas when you add/remove a class, you must make sure that newly added elements also have the class added/removed. So, I'd say adding/removing classes works well for static HTML, whereas manipulating CSS rules might be a better choice for dynamically created DOM elements.
you can create new style rule instead.
var cssStyle = document.createElement('style');
cssStyle.type = 'text/css';
var rules = document.createTextNode(".YOU_CLASS_NAME{display:hidden}");
cssStyle.appendChild(rules);
document.getElementsByTagName("head")[0].appendChild(cssStyle);
$("#YOUR_DOM_ID").addClass("YOUR_CLASS_NAME");
You may like to exploit/rewrite this function:
function getStyleRule(ruleClass, property, cssFile) {
for (var s = 0; s < document.styleSheets.length; s++) {
var sheet = document.styleSheets[s];
if (sheet.href.endsWith(cssFile)) {
var rules = sheet.cssRules ? sheet.cssRules : sheet.rules;
if (rules == null) return null;
for (var i = 0; i < rules.length; i++) {
if (rules[i].selectorText == ruleClass) {
return rules[i].style[property];
//or rules[i].style["border"]="2px solid red";
//or rules[i].style["boxShadow"]="4px 4px 4px -2px rgba(0,0,0,0.5)";
}
}
}
}
return null;
}
Do you mean something like this?
var elements = document.getElementsByClassName('hidden-class');
for (var i in elements) {
if (elements.hasOwnProperty(i)) {
elements[i].className = 'show-class';
}
}
Then the CSS
.hidden-class { display: none; }
.show-class { display: inline; }