Login | Register   
RSS Feed
Download our iPhone app
Browse DevX
Sign up for e-mail newsletters from DevX

By submitting your information, you agree that devx.com may send you DevX offers via email, phone and text message, as well as email offers about other products and services that DevX believes may be of interest to you. DevX will process your information in accordance with the Quinstreet Privacy Policy.

Tip of the Day
Language: Web
Expertise: All
May 11, 1999



Application Security Testing: An Integral Part of DevOps

Cache Your JavaScript Object References

You can write JavaScript code that is more readable and maintainable by reducing object references. For instance, you can use the with() statement or nested with() statements in JavaScript to shorten object references (see Tip: "Make Your JavaScript Code More Readable Using with()"). If you find that technique confusing, another option is to cache your objects. For example, you could rewrite this code:
parent.frames[1].document.forms[0].elements[0].value = "foo";
parent.frames[1].document.forms[0].elements[1].value = "bar";
parent.frames[1].document.forms[1].elements[0].value = "hello";
parent.frames[1].document.forms[1].elements[1].value = "world";
like this with object caching:
var fra = parent.frames[1];
var frm0 = fra.document.forms[0];
var frm1 = fra.document.forms[1];
frm0.elements[0].value = "foo";
frm0.elements[1].value = "bar";
frm1.elements[0].value = "hello";
frm1.elements[1].value = "world";
William Wen
Comment and Contribute






(Maximum characters: 1200). You have 1200 characters left.



We have made updates to our Privacy Policy to reflect the implementation of the General Data Protection Regulation.
Thanks for your registration, follow us on our social networks to keep up-to-date