JavaScript DOM Change Event

Create DOM Change Event In JavaScript

To demonstrate, DOM event and styling with JavaScript, a new window will be opened in a new web browser window or tab.

Multiple windows can be opened and reused assuming that JavaScript is not disabled. JavaScript can be used to create events, inline styles or a internal or external styles.

JavaScript open() method can take optional parameters for the name, URL and window dimensions. Inline style attributes are inside HTML elements, Internal styles use a style element. The DOM event for this tutorial is the change method.

Common Syntax Of DOM Event Change In JavaScript

Glossary:

URL

Page to open.

Name

Target attribute or name of window.

Specs

Comm-separated list of items such as dimensions, location and scrollbars.

CSS

Cascading Style Sheets inherit properties and methods from the parent.

Event

Action triggered by user interaction of browser occurrence.

Common Methods For DOM Event

Ojamboshop.com Learning JavaScript DOM Event

Name	Description	Example
open()	Create a new browser window.	window.open();
style=”property:value”	Inline Event.	style=”color:blue;”
onchange	Trigger a function when an form element is changed.	element.onchange = myFunc;
Name	Description	Example

JavaScript DOM Change Event Snippet

// OjamboShop.com Learning JavaScript DOM Change Event Tutorial

// DOM Change Event
let nw = window.open("", null, "height=200,width=400,status=yes,toolbar=no,menubar=no,location=no");  

// New Window Content
let div = nw.document.createElement("div");
div.innerHTML = `
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<form id="myForm">
	<input type="text" name="fname" placeholder="First name" value="Edward" />
	<input type="number" name="age" placeholder="Your Age" value="23" />
	<input type="submit" name="send" value="Submit" />
</form>
<em></em>
<style>
	span { color: red; font-weight: bold; }
</style>
`;
let meta = nw.document.createElement("meta");
meta.httpEquiv = 'Content-Security-Policy';
meta.content = `default-src 'self'; script-src 'self' 'unsafe-inline'`;
//nw.document.head.appendChild(meta);
nw.document.body.appendChild(div);
nw.document.querySelectorAll("#myForm input").forEach(function(elem) {
	elem.addEventListener('change', function(evt) {
		nw.document.querySelector('em').innerHTML = `The old value for ${elem.name} was ${elem.defaultValue}`;
	});
});

Usage

You can use any IDE or text editor and the web browser to compile and execute JavaScript code. For this tutorial, the OjamboShop.com Learning JavaScript Course Web IDE can used to input and compile JavaScript code for the open window DOM Change Event.

Open Source

JavaScript follows the ECMAScript standard and is licensed under the W3C Software License by web browser vendors and runtime environment vendors. This allows commercial use, modification, distribution, and allows making derivatives proprietary.

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Conclusion:

JavaScript makes it easy to create DOM input event styled content for new windows. New windows can be opened in the same window, as a new window or new tab.

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References:

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