How do you display input validation error

Display errors in red below each invalid input field

Blogger: https://www.google.com/accounts/CreateAccount?continue=https%3A%2F%2Fwww.blogger.com%2Floginz%3Fd%3Dhttp%253A%252F%252Fwww.blogger.com%252Fhome%26a%3DADD_SERVICE_FLAG&hl=en_GB&service=blogger&skipvpage=true&ltmpl=start&naui=8

Yahoo Mail: https://edit.yahoo.com/registration?.intl=us&.pd=ym_ver%253D0%2526c%253D%2526ivt%253D%2526sg%253D&new=1&.done=http%3A//mail.yahoo.com&.src=ym&.v=0&.u=cgf061p6mc1fm&partner=&.partner=&pkg=&stepid=&.p=&promo=&.last=

Oracle Forum: https://myprofile.oracle.com/EndUser/faces/profile/createUser.jspx?nextURL=http%3A%2F%2Fforums.oracle.com

Twitter: https://twitter.com/account/create

Esnip (on Firefox): http://www.esnips.com/NewAccountAction.ns?action=init

Hotmail: https://signup.live.com/signup.aspx?id=64855&mkt=en-US&form=MWGELB&publ=SIGNINHM&crea=SITEACQ_CIMS015888_Hotmail_EN-US_0x0_36214&lic=1

Job Street: http://myjobstreet.jobstreet.com/registration/quick-register.php?site=sg&deposit_through=s

JobsDB: http://sg.jobsdb.com/SG/EN/JobSeeker/Registration

Property Guru: http://www.propertyguru.com.sg/register#top

Display an generic message at the top of the page + Display errors in red below each invalid input field

Vietnamework.com: http://www.vietnamworks.com/jobseekers/signup.php?lang=2#err_top

Apple Store: https://store.apple.com/1800-MY-APPLE/WebObjects/singaporestore.woa/920184021/wo/nZMi8SOBKCCj343MT1tza3xYBZk/5.0.16.9.5.1.1.0.1

Display all invalid error at the top of the page

Amazon.com: https://www.amazon.com/ap/signin?ie=UTF8&pf_rd_r=05JGGPJ2RGK60ME9AEBM&pf_rd_m=ATVPDKIKX0DER&pf_rd_t=6301&pf_rd_i=usflex&pf_rd_p=1277563402&pf_rd_s=signin-slot

Forum phpBB: http://forum.vncnus.net/ucp.php?mode=register

Validate input on client side

Esnip (on IE): http://www.esnips.com/NewAccountAction.ns?action=init

HDB Calculator: http://services2.hdb.gov.sg/webapp/BB29MTHLY/BB29SMTHLY

Citibank Home Loan: http://www.citibank.com.sg/global_docs/microsite/ln/hl/repay_schedule/repay_schedule.htm

Tiger Airway Search Flight: http://www.tigerairways.com/sg/en/real_deals.php

Display errors on a separate page

CPF Calculator: http://www.cpf.gov.sg/cpf_info/calculator/vl/vl_input.asp?prof=&src=&chkDis=1&propType=opt3