There are three types of resumes in this respect: the paper resume, the web or e- resume, and the scannable resume.
The only real difference between a traditional resume and a purely web-based resume is that you are limited more to the content of your resume rather than its design or appearance.
Many online job/career sites (careerbuilder.com, monster.com, etc) will display your resume to employers who are searching online. A web resume often will not display symbols, fonts, or intricate layouts, though, so you have to simplify.
Be aware though, all employers will want a paper copy of your resume when they interview you, so you will need both versions.
The third type of resume is the scannable resume, which has to be in plain text. This resume is meant to be scanned into a database and then searched by keywords. These resumes often include a "Keywords" section that allows for the most matches with what the employer is looking for.
The thing to remember is that you should always tailor your resume to your employer's needs. Usually, they will specify. Otherwise, have several versions ready... it takes very little time, and you will appear more professional.
i believe that an e-resume is different from the traditional because you are limited more to the content of your resume rather than its design or appereance.
A e-resume is one that is scanned electronically while a traditional resume is one the is not scanned elctronically.