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Last active Aug 29, 2015
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Javascript Validation regex
var hasLowercase = function (val) {
var patt = new RegExp(/([a-z]+)/g);//checks for 1 or more a-z characters.
return patt.test(val);
var hasUppercase = function (val) {
var patt = new RegExp(/([A-Z]+)/g);//checks for 1 or more A-Z characters.
return patt.test(val);
var hasDigit = function (val) {
var patt = new RegExp(/([d]+)/g);//checks for 1 or more digit character.
return patt.test(val);
var hasSpecialChar = function (val) {
//checks for 1 or more special character. this includes the following ~`!@#$%^&*()_-+={}[]|\<>,./?;':"
var patt = new RegExp(/([\~\`\!\@\#\$\%\^\&\*\(\)\_\+\-\=\|\}\{\\\]\[\'\;\"\:\/\.\,\?\>;\<;])+/g);
return patt.test(val);
//using the previous set of functions this one checks for 1 uppercase, 1 lowercase, 1 digit and 1 special character
var IsValidExpression = function (testVal) {
var retval = hasLowercase(testVal) && hasUppercase(testVal) && hasDigit(testVal) && hasSpecialChar(testVal);
return retval;
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