Javascript startsWith() and check the domain of executed script using window.location.hostname

Just to remind myself… there is no String.startsWith() in Javascript. This bite me once again… Instead you do a regular expression match from the beginning of the string.

To find out whether your Javascript is being executed on a certain domain you do:

if(window.location.hostname).match("^opensourcehacker.com")) {
   // yes this is our domain
} else {
   // subdomain (might be www.!) or some else domain
}

Yours sincerely, The regex hater

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