You can get an element by its ID by calling document.getElementById. JavaScript getElementById() - To access an HTML DOM element with the help of its id value, use document.getElementById() method. For example, this is what setting the background color of an HTML element whose id value is superman looks like: If you need to get access to an element which doesn't have an ID, you can use querySelector() to find the element using any selector. We have a div element with an ID of demo. Approach: Select the element whose style properties needs to be change.

Examples might be simplified to improve reading and basic understanding. Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content. Returns null if no elements with the specified ID exists. Try our Online examples. By calling element.style.color = "red"; you can apply the style change dynamically. property = new style The following example changes the style of a

element: The getElementById () method returns the element that has the ID attribute with the specified value. While using this site, you agree to have read and accepted our We can grab an element by ID with the getElementById() method of the document object. W3Schools is optimized for learning, testing, and training. This object allows you to specify a CSS property and set its value. "This is how we access an HTML DOM element using its id value." Sets or returns the behaviour of the background and border of an element at page-break, or, for in-line elements, at line-break. Given an HTML document and the task is to change the style properties (CSS Properties) of an element dynamically with the help of JavaScript. Use this: $('#navigation ul li').css('display', 'inline-block'); Also, as others have stated, if you want to make multiple css changes at once, that's when you would add the curly braces (for object notation), and it would look something like this (if you wanted to change, … This method is one of the most common methods in the HTML DOM, and is used almost every time you want to manipulate, or get info from, an element on your document. You need to set it to something that has a value: document.getElementById('mybox').style.display = "block"; The display property also allows the author to show or hide an element… I'm trying this but without success: // Get all elements that have a style attribute var elms = document.querySelectorAll(""); // Loop through them Array.prototype.forEach.call(elms, function(elm) { // Get the color value var crs = getComputedStyle(elm, ':after').getPropertyCSSValue('color'); alert(crs); – slwr May 26 '12 at 19:17 … For example : html, body, div, h1, h2, h3, p, img, a, etc.As id is maintained uniquely for HTML DOM elements, document.getElementById() function returns object of only one element whose id matches.If it doesn’t find an HTML DOM element with the specified id, nothing is returned.In the following example, we shall access an HTML DOM element, a paragraph with id=”message” and modify its content. However, if more than one element with the specified ID exists, the getElementById() method returns the first element var x = document.getElementById("demo");   // Get the element with id="demo" The getElementsByClassName() method returns a collection of all elements in the document with the specified class name, as an HTMLCollection object. document.getElementById(); In order to be accessed by ID, the HTML element must have an id attribute. Setting the Style Directly. W3Schools is optimized for learning, testing, and training. Because setting the div's display style property to "" doesn't change anything in the CSS rule itself. Else nothing is returned. That basically just creates an "empty," inline CSS rule, which has no effect beyond clearing the same property on that element. Once we have the object, we can get the properties and call the methods of the object.

Examples might be simplified to improve reading and basic understanding. supports the method.Get the element with id="demo" and change its color:If you want to report an error, or if you want to make a suggestion, do not hesitate to send us an e-mail: For example, to get the value of the input element, get the value attribute.

Every HTML element that you access via JavaScript has a style object. Definition and Usage. Whereas the display ="none" will hide your complete element and the rest of the elements on the page will fill that void created by it. in the source code.The numbers in the table specifies the first browser version that fully function colorElementRed(id) { var el = document.getElementById(id); el.style.color = "red"; } You could also use setAttribute(key, value) to object.style.visibility="hidden" The difference between the two is the visibility="hidden" property will only hide the contents of you element but retain it position on the page. A block element fills the entire line, and nothing can be displayed on its left or right side. share. 3: boxShadow: Attaches one or more drop-shadows to the box: 3: boxSizing: Allows you to define certain elements to fit an area in a certain way: 3: captionSide: Sets or returns the position of the table caption: 2: clear getElementById Syntax and Examples are provided. Below is a function that turns an element’s colour to red when you pass it the element’s id.