isEmail of rules, Methods Webix Docs

checks whether the typed data complies with the rules of email address writing

boolean isEmail(any value);

value

anythe value to check

boolean

true, if the value is an email

rules:{ // component name is used to apply the rule to it
    "login":webix.rules.isEmail
}

Details

You can call this function explicitely to perform the related check, as follows:

if(webix.rules.isEmail(value)){
   // your logic
}