I am looking for a way to remove a specific class attribute from all elements on a webpage. The challenge is that I only have the class name as a reference, and cannot use any other identifiers like id or another class. Additionally, I cannot rely on JavaScript libraries to accomplish this task.
If anyone has suggestions on how to achieve this, please share them as it would be greatly appreciated.
It's worth noting that the class we are trying to remove will not appear more than twice.
In case you are using a modern web browser:
var forEach = Array.prototype.forEach;
var targetClass = "yourclass";
forEach.call(document.querySelectorAll("." + targetClass), function(element) {
element.classList.remove(targetClass);
});
Refer to: forEach, querySelectorAll, and classList for more information.
function removeClassNames(name) {
// changing the result into an Array object
var elements = Array.prototype.slice.call(
document.getElementsByClassName(name)
);
for (var index = 0, length = elements.length; index < length; index++) {
var element = elements[index];
element.className = element.className.replace(
new RegExp('(^|\\s+)' + name + '(\\s+|$)', 'g'),
'$1'
);
}
}
simply use it like this:
removeClassNames('target-class-name');
UPDATE: check out the live demo here: http://jsbin.com/eyuxur
This method may not be the most efficient on extremely large pages, as it loops through all elements to remove a specific class.
var elements = document.getElementsByTagName('*');
for(var j=0; j < elements.length; j++){
elements[j].classList.remove('TargetClass');
}
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