const regex = /(^(?:\d+_){4})(card\d+)_(port\d+)/gm;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('(^(?:\\d+_){4})(card\\d+)_(port\\d+)', 'gm')
const str = `192_168_10_2_card02_port01_other_text_with_card_or_port
10_22_1_200_card4_port5_another_string_with_port_or_card
something_else_with_card_or_port_in_it
And in a second call, I'd like to match a different word in these strings.
192_168_10_2_card02_port01_other_text_with_card_or_port
10_22_1_200_card4_port5_another_string_with_port_or_card
something_else_with_card_or_port_in_it`;
// Reset `lastIndex` if this regex is defined globally
// regex.lastIndex = 0;
let m;
while ((m = regex.exec(str)) !== null) {
// This is necessary to avoid infinite loops with zero-width matches
if (m.index === regex.lastIndex) {
regex.lastIndex++;
}
// The result can be accessed through the `m`-variable.
m.forEach((match, groupIndex) => {
console.log(`Found match, group ${groupIndex}: ${match}`);
});
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for JavaScript, please visit: https://developer.mozilla.org/en/docs/Web/JavaScript/Guide/Regular_Expressions