nijjwal/disable-enter-key.html

## disable-enter-key.html
<!DOCTYPE html>
<html>
<head>
	<title>Disable Key in JavaScript</title>
	<script>
		function noenter(e) {
			//1. window is an object that represents an open window in a browser.

			//2. event is an action that can be detected by javascript.
			//Sometimes we want to execute a JavaScript when an event
			//occurs, such as when a user clicks a button.

			//3. Internet Explorer doesn't pass event to handler.
			//Instead you can use window.event object which is being
			//updated immediately after the event was fired.
			//So the crossbrowser way to handle events:

			//4. window is an object, event is a property that contains the
			//last event that took place.

			//5. The followig code means e argument is optional. So if you call the method
			//with no arguments it will use a default value of "window.event"
		    e = e || window.event;
		    var key = e.keyCode || e.charCode;
		    //alert('e.type: ' + e.type + '; key: ' + key);
		    return key !== 13;
		}
    </script>

    <style>
    	textarea { width:300px; height:200px; }
    </style>
</head>
<body>
	<form method="POST" action="google.com">
		<textarea>txtbox1</textarea>
		<textarea onkeypress="return noenter(event)">txtbox2</textarea>
		<input type="submit" value="submit">
	</form>
</body>
</html>
	<!DOCTYPE html>
	<html>
	<head>
	<title>Disable Key in JavaScript</title>
	<script>
	function noenter(e) {
	//1. window is an object that represents an open window in a browser.

	//2. event is an action that can be detected by javascript.
	//Sometimes we want to execute a JavaScript when an event
	//occurs, such as when a user clicks a button.

	//3. Internet Explorer doesn't pass event to handler.
	//Instead you can use window.event object which is being
	//updated immediately after the event was fired.
	//So the crossbrowser way to handle events:

	//4. window is an object, event is a property that contains the
	//last event that took place.

	//5. The followig code means e argument is optional. So if you call the method
	//with no arguments it will use a default value of "window.event"
	e = e \|\| window.event;
	var key = e.keyCode \|\| e.charCode;
	//alert('e.type: ' + e.type + '; key: ' + key);
	return key !== 13;
	}
	</script>

	<style>
	textarea { width:300px; height:200px; }
	</style>
	</head>
	<body>
	<form method="POST" action="google.com">
	<textarea>txtbox1</textarea>
	<textarea onkeypress="return noenter(event)">txtbox2</textarea>
	<input type="submit" value="submit">
	</form>
	</body>
	</html>