Next, the function applies setAttribute() to reset the style attribute of the element. This sets our element as the active object being modified.
The function declares the variable to hold the element – el – and assigns the event.target value to it. The changeColor() function receives the DOM event as a parameter, making it very easy to operate on the specific tag that was clicked. This event is handled by the changeColor() function. The triggering DOM event is onclick, which is defined inside the element. The HTML element does not need to have a clear class defined in order for the JavaScript to modify its contents. Note: This style is not necessary for the code to work. This can help the user understand that a given element can be interacted with by, for example, clicking on the link. Setting the style to pointer causes the cursor to change appearance, making it look like a hand. The cursor: pointer style modifies the display of the mouse cursor, which is used to show the mouse’s current position on the screen. This code defines a header element( ), an onclick event, and a single style – cursor: pointer. The first approach to changing CSS with JavaScript will be to leverage inline styling. A function in charge of making the change -This can change most CSS style elements, with the exception of CSS selectors.It can also be done with CSS pseudo-classes – more on these below.
An event to trigger the change – This can be a DOM event or a JavaScript event as in the case of setTimeout().Two things are required in order to make CSS changes: Each approach has its advantages and disadvantages, but we’ll explore them in another article. External – using a element which links to an external CSS fileĪll three approaches are explored below.Internal – using a element in the HTML document’s.Inline – using the style attribute inside HTML elements.There are three ways CSS can be applied to an HTML document: CSS is a set of structured rules describing the layout of elements in an HTML document. Cascading Style Sheets (CSS) is used to design the layout of a webpage.
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