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@jthodge
Created February 8, 2020 18:36
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let re = /a/g
re.test('ab') // returns true
re.test('ab') // this will fail! re.lastIndex === 1 so it starts searching at 'b'
re.test('ab') // this will pass! since it failed, re.lastIndex is reset to 0
// https://stackoverflow.com/questions/11477415/why-does-javascripts-regex-exec-not-always-return-the-same-value
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