How can I match ever k
that is not followed by a number 0
.
For example k0
is not valid while k1
is.
try this
const regex = /k(?!0).*/g console.log('k0k1k2'.match(regex))
without .* to get just a element k, like this
const regex = /k(?!0)/g console.log('k0k1k2'.match(regex))
You can get all 'k' and number (but not k0) and dive into all matches like this:
var s = 'k0k10k2000dasdasdasdk1k0'
var re = /k[1-9]\d*/g;
var m;
while (m = re.exec(s)) {
console.log(m);
}
// [ 'k10', index: 2, input: 'k0k10k2000dasdasdasdk1k0' ]
// [ 'k2000', index: 5, input: 'k0k10k2000dasdasdasdk1k0' ]
// [ 'k1', index: 20, input: 'k0k10k2000dasdasdasdk1k0' ]
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