HOT TO REFER TO IMAGE AS ELEMENT IN JAVASCRIPT CODE
This will give a nice clean separation of the style from the script, and avoid both the in-lining of the style rules and run-time mutilation of the style tree by code injection. The tagName property will return the tag name of an element. I can use the tagName property in JavaScript to check if the element is an image or not. I specifically want to check if the element is an Image. I want to be able to manipulate them as if they are JavaScript images, although their sources will be HTML elements, not the direct source of the image. Let us assume I have a list of images inside a DIV element along with other elements.
It is more predictable and stable to modify the class attribute on myimg, and use a predefined set of style classes for the cases you need to handle. Once I have loaded the images in the HTML, I want to create a JavaScript array to store them in while they're being accessed and manipulated by the JavaScript, i.e. And then we set the baseImage.onload property to a function that calls context.drawImage with baseImage and the x and y coordinates of the top left corner. We set the src property to the URL of the image. Instead, let’s create a new CSS rule inside the style tags or an. Next, we create an image element with the Image constructor to create an image. Adding multiple styles to the image element individually would be tedious. Sets or returns the value of the hspace attribute of an image: isMap: Sets or returns whether an image should be part of a server-side image-map, or not: longDesc: Not. It becomes inline style.Įven so, you almost certainly do not need to stuff in novel rules, and changing inline style is often avoidable. Add ID Attribute To The Image In JavaScript. Sets or returns the CORS settings of an image: height: Sets or returns the value of the height attribute of an image: hspace: Not supported in HTML5. If you insist upon funking with the style nodes, you can stuff whatever properties you want into the style property of myimg. Obtain an element reference el, to gal1, using getElementById, then var myimg = el.getElementsByTagName("img") and you are almost done.
Pranay Rana's answer to use getElementsByTagName is the best option if your constraints are actually stable (only one img). I can use the tagName property in JavaScript to check if the element is an image or not. (You might as well use innerHTML to stuff in a stylesheet in that case - at least it will be faster than making DOM calls.) It seems nifty to be able to do this, but if your application is important to you, you will regret it. Unless you absolutely need to pick the colors or border sizes dynamically, which I doubt because you are an admitted beginner, stuffing stylesheets in with Javascript is a Rube Goldberg device.
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