How to Check if a String Contains One of Multiple Values in JavaScript
Ferenc Almasi • 2022 January 12 •
1 min read
To match a variable in JavaScript against multiple possible values, we can either use some in combination with includes in the following way:
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const blacklist = [
'suspicious-domain',
'untrusty-site',
'devious-page'
]
blacklist.some(item => document.location.href.includes(item))Or if you need to match against a more complex pattern, then you can combine the elements of the array into a regex object and run a test against it like so:
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const blacklist = [
'suspicious-domain',
'untrusty-site',
'devious-page'
]
const regex = new RegExp(blacklist.join('|'), 'gi')
const isBlacklisted = regex.test(document.location.href)
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