How to write html in javascript

how to write html in javascript

Learn how to dynamically create HTML elements with plain JavaScript

When we are writing a JavaScript code and want to write on the HTML, we can use function, it accepts a simple string, variable, concatenated string, combinations of the multiple variables and print on the HTML document. Here, write() is an HTML DOM method and it writes the string/text to the HTML directly. Syntax:; or, . var node = euro-caspian.commentById ('node-id'); euro-caspian.comTML ('some dynamic html'); Using DOM methods: var node = euro-caspian.commentById ('node-id'); var newNode = euro-caspian.comElement ('p'); euro-caspian.comChild (euro-caspian.comTextNode ('some dynamic html')); euro-caspian.comChild (newNode); Using the DOM API methods might be the purist way to do stuff, but .

The id attribute defines the HTML element. Using document. In JavaScript, the window object is the global scope object, erite means that variables, properties, and methods by default how to be good at hip hop dancing to the window object.

This also means that specifying the window keyword is optional:. For debugging purposes, you can call the console. The only exception is that you can call the window. Get certified by completing a course today! If you want to report an error, or if you want to make a suggestion, do not hesitate to send us an e-mail:.

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The HTML Tag The HTML tag is used to define a client-side script (JavaScript). The element either contains script statements, or it points to an external script file through the src attribute. Common uses for JavaScript are image manipulation, form validation, and dynamic changes of . euro-caspian.comTML = "New Heading"; Try it Yourself». Example explained: The HTML document above contains an element with id="id01". We use the HTML DOM to get the element with id="id01". A JavaScript changes the . Jan 09,  · Create a list of bookmarks. In this example, we are going to create a list of bookmarks, append bookmarks to parent element and then present it in HTML using plain JavaScript. The starting point is an file that consist of a div element with an ID of bookmarks. The ID is an important and necessary factor in order to locate the element Estimated Reading Time: 6 mins.

Join Stack Overflow to learn, share knowledge, and build your career. Connect and share knowledge within a single location that is structured and easy to search. It seems that experienced web developers frown upon using document. I wouldn't say using document. In some cases you just need to have document. Look at how Google analytics gets injected into most websites. It's executed after the page has finished loading and does nothing more than write out a string of HTML.

The way you'd go about doing this would be to programmatically create your nodes and then attach them to an existing place in the DOM. For [purposes of a contrived] example, assuming that I've got a div element maintaining an ID attribute of "header," then I could introduce some dynamic text by doing this:.

Perhaps a good idea is to use jQuery in this case. It provides handy functionality and you can do things like this:. DOM methods are highly preferable to strings for setting attributes and content. But this isn't really the whole story. What is slow is inserting a lot of child nodes:. This translates to a load of work for the DOM finding the right place in its nodelist to insert the element, moving the other child nodes up, inserting the new node, updating the pointers, and so on.

Setting an existing attribute's value, or a text node's data, on the other hand, is very fast; you just change a string pointer and that's it.

This is going to be much faster than serialising the parent with innerHTML, changing it, and parsing it back in and won't lose your unserialisable data like event handlers, JS references and form values.

There are techniques to do DOM manipulations without so much slow childNodes walking. In particular, be aware of the possibilities of cloneNode , and using DocumentFragment. But sometimes innerHTML really is quicker. You can still get the best of both worlds by using innerHTML to write your basic structure with placeholders for attribute values and text content, which you then fill in afterwards using DOM.

I'm not particularly great at JavaScript or its best practices, but document. And, as Tom mentioned, JavaScript is done after the page is loaded; it'd probably be a better practice to have the initial setup for your page to be done via standard HTML via.

If not each time you will call this function, the content of your element will be erased and replace with the last call you made of it. But be aware: document. So use it for not repeating when having a lot of data to write like a catalogue of products or images.

Here a simple example: all your li for your aside menu are stored in an array "tab", you can create a js script with the script tag directly into the html page and then use the write method in an iterative function where you want to insert those li on the page. This works because Js is interpreted in a linear way during the loading.

So make sure your script is at the right place in your html page. You can also use an external Js file, but then again you must declare it at the place where you want it to be interpreted.

For this reason, document. In this case use:. You'll see the function property "write" in the document object. You can also use document. If you use document. From other hand other methods can't be used before DOM has been created page loaded , because they work directly with DOM. In most cases node. Most of the time it also make code more readable and smaller. The document. You can only use it before the page has finished loading. You can't use it to update the contents of a loaded page.

What you probably want is innerHTML. I think you should use, instead of document. Safe and almost cross browser. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Learn more. Ask Question. Asked 11 years, 6 months ago. Active 7 months ago. Viewed k times.

Why is this? Caitlin Webb 3 3 3 bronze badges. Gary Willoughby Gary Willoughby I didn't add this as an actual answer, but I came close. This is a case where the jQuery meme actually makes sense. You should totally drop that and use jQuery!

It is written in JavaScript and will use one or more of the methods in the answers below, with the disadvantage that as a general purpose library it will not be making the informed choices of strategy for each situation that you as a developer would have.

Tim: It is no more "correct" or "incorrect" than any of the methods given, but it is a perfectly valid approach. There is no one answer that is "correct" in all situations. Your given "disadvantage" is merely a characteristic: I may or may not to spend my time analyzing optimal strategies for HTML production when the potential benefits are marginal.

Depending on your choice, transparently managing that complexity could be an advantage or a disadvantage. One may decide to use jQuery until and unless there is a need for a more optimal strategy.

Adam - Well argued. It's certainly not a job worth using jQuery for on its own. Add a comment. Active Oldest Votes. Migisha 4 4 silver badges 10 10 bronze badges.

Ricky Ricky 5, 2 2 gold badges 29 29 silver badges 30 30 bronze badges. It's probably not what you want to do, but still you can. A nice full answer, thankyou. I understand now that document. Could you provide proof that innerHTML is always faster? I would doubt it's always the case. If you add nodes one at a time to an existing node in the DOM then I expect innerHTML is faster, since the browser potentially has to manipulate and re-render parts of the document at every stage, but if instead you create a new node tree and add its root node to the DOM at the end, I would expect that to be as fast or faster than using innerHTML.

Show 7 more comments. Tom Tom It's actually executed when you call it. If you call it after the page has loaded it will overwrite the content.

Stick to HTML and document. Nyla Pareska Nyla Pareska 1, 6 6 gold badges 22 22 silver badges 36 36 bronze badges. Because people are talking about the more elegant, faster and cross-browser way of doing something, and having to load jQuery to achieve it, is not an answer. DOM methods, as outlined by Tom. RoyalKnight RoyalKnight 5 5 bronze badges.

If you write dynamic components using javascript you will end up writing to DOM with javascript. While document. Mohammad Usman In this case use: element. Myriam Rouve Myriam Rouve 31 3 3 bronze badges.

There are many ways to write html with JavaScript. These methods are: node. Maiku Mori Maiku Mori 7, 1 1 gold badge 37 37 silver badges 52 52 bronze badges.

This doesn't apply if you're doing something "clever" like emulating a widget system. Rob Rob Mike Daniels Mike Daniels 8, 1 1 gold badge 28 28 silver badges 44 44 bronze badges. Luca Luca 1, 10 10 silver badges 4 4 bronze badges. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password.


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