const regex = /\<script\>[^<]*?(findthis).*?\<\/script\>/sg;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('\\<script\\>[^<]*?(findthis).*?\\<\\\/script\\>', 'sg')
const str = `<html>
<head>
<script>
var x = 1;
var y = 'findthis'; // Should be matched
</script>
</head>
<body>
<script>
var a = 2;
</script>
<h1>Welcome!</h1>
<p>This findthis here should not be matched.</p>
<script>
var b = 'findthis too'; // Should be matched, too.
</script>
<div>
<p>This findthis should not be matched neither.</p>
</div>
</body>
</html>`;
// 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