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Tip of the Day
Average Rating: 3.3/5 | Rate this item | 33 users have rated this item.
Expertise: Intermediate
Language: Web
May 3, 1999
Make Your JavaScript Code More Readable Using the with() Statement
The with() statement in JavaScript is identical to the With statement found in Visual Basic. Using with(), you can reduce object references and make your code more readable. Surprisingly, it is possible to have nested with() statements. For example, this code:
 
function foo(){
	var x = document.forms[0].elements[0].value;
	var y = document.forms[0].elements[1].value;
	var z = document.forms[0].elements[2].options[document.forms[0].elements[2].selectedIndex].text;
}
could be rewritten as:
 
function foo(){
	with(document.forms[0]){
		var x = elements[0].value;
		var y = elements[1].value;
	with(elements[2]){
	var z = options[selectedIndex].text
}
}
}
William Wen
If you have a hot tip and we publish it, we'll pay you. However, due to accounting overhead we no longer pay $10 for a single tip submission. You must accumulate 10 acceptable tips to receive payment. Be sure to include a clear explanation of what the technique does and why it's useful. If it includes code, limit it to 20 lines if possible. Submit your tip here.
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