How can I extract the user name from an email address using javascript?

javascript email

Regular Expression with match

with safety checks

var str="someone@example.com";var nameMatch = str.match(/^([^@]*)@/);var name = nameMatch ? nameMatch[1] : null;

written as one line

var name = str.match(/^([^@]*)@/)[1];

Regular Expression with replace

with safety checks

var str="someone@example.com";var nameReplace = str.replace(/@.*$/,"");var name = nameReplace!==str ? nameReplace : null;

written as one line

var name = str.replace(/@.*$/,"");

Split String

with safety checks

var str="someone@example.com";var nameParts = str.split("@");var name = nameParts.length==2 ? nameParts[0] : null;

written as one line

var name = str.split("@")[0];

Performance Tests of each example

JSPerf Tests

javascript email

"someone@example.com".split('@')[0]

javascript email

var email = "someone@example.com";var username = email.substring(0,email.indexOf('@'))

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