const regex = /LABEL\d+=\[value=\h/gm;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('LABEL\\d+=\\[value=\\h', 'gm')
const str = `event=RequestLogging foo LABEL1=[value=xyz description=desc1 metadata=[]] LABEL2=[value=abc description=desc2 metadata=[]] LABEL5=[value=def description=desc3 metadata=[]] LABEL6=[value=ghi description= metadata=[]]
bar LABEL3 LABEL4 LABEL5=[value= description= metadata=[]] LABEL6
LABEL5=[value=123 description= metadata=[]]`;
// 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