How To Change Style Using Javascript

In addition to other answers, if you want to use the dash notition for style properties, you can also use document.getElementByIdquotxyzquot.stylequotpadding-topquot quot10pxquot edit 2023 Very old answer. For who it may concern I created a small library to change styling dynamically Github.

Given an HTML document and the task is to change the style properties CSS Properties of an element dynamically with the help of JavaScript. Approach Using element.style Property. The element.style property is represented by the CSSStyleDeclaration object, which is returned via the style property.

Adding onto AtheistP3ace's answer, here is a function that uses pure JavaScript to change the content of a style block Change the CSS in the style section. Property is the name of the class or id E.G. quot.mdc-cardquot or quotmainquot. Style is the name of the CSS style. E.G. quotBackgroundquot.

By calling element.style.color quotredquot you can apply the style change dynamically. Below is a function that turns an element's colour to red when you pass it the element's id. function colorElementRedid var el document.getElementByIdid el.style.color quotredquot You could also use setAttributekey, value to

To change the style of an HTML element, use this syntax document.getElementById id .style. property new style The following example changes the style of a ltpgt element

Normally, we use style. to assign individual style properties. We can't set the full style like div.stylequotcolor red width 100pxquot, because div.style is an object, and it's read-only. To set the full style as a string, there's a special property style.cssText

const element document.querySelector'.demo' element.style.backgroundColor 'red' Code language JavaScript javascript Notice that when setting the CSS styles using the style property you have to write the CSS properties in camelcase. Instead of using a dash -to separate the words you will have to write in capitals the first letter of

JavaScript syntax is slightly different from CSS syntax backgroundColor background-color. See our Full Style Object Reference. Note 3. Use this style property instead of the The setAttribute Method, to prevent overwriting other properties in the style attribute. See Also The CSS Tutorial. The CSS Reference. The Style Object. The HTML

If you use the operator, the existing style will be removed, like this note.style.cssText 'colorredbackground-coloryellow' Code language JavaScript javascript 2 Using a helper function. The following helper function accepts an element and a style object. It add all styles from the style object to the style property of the element

Output Approach 2 Changing the class itself - We can use two properties that can be used to manipulate the classes. The classList Property The classList is a read-only property that returns the CSS class names of an element as a DOMTokenList object. Syntax document.getElementByIdquotidquot.classList. You can use the below-mentioned methods to add classes, remove classes, and toggle between