const regex = /^begin.*(?:\n(?!^end).*)*536916223(?:.*\n)*?^end/gm;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('^begin.*(?:\\n(?!^end).*)*536916223(?:.*\\n)*?^end', 'gm')
const str = `begin active link
export-version : 11
actlink-order : 2
wk-conn-type : 1
schema-name : HelpDesk
actlink-mask : 1
actlink-control: 750000002
enable : 1
action {
set-field : 0\\536916222\\101\\4\\1\\1\\
}
errhandler-name:
end
begin active link
export-version : 11
actlink-order : 2
wk-conn-type : 1
schema-name : HelpDesk
actlink-mask : 1
actlink-control: 610000092
enable : 1
permission : 0
action {
id : 536916223
focus : 0
access-opt : 1
option : 0
}
action {
set-field : 0\\536916222\\101\\4\\1\\1\\
}
errhandler-opt : 0
errhandler-name:
end
begin active link
actlink-order : 12
wk-conn-type : 1
schema-name : HelpDesk
actlink-mask : 2064
enable : 1
permission : 0
action {
id : 536916223
focus : 0
access-opt : 1
option : 0
}
action {
set-field : 0\\536916222\\101\\4\\1\\1\\
}
errhandler-opt : 0
errhandler-name:
end`;
// 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