const regex = new RegExp('<p>[^*?]<a.*?href=.*?javascript:window.history.back.*?>[^*?].*?<\\/a>[^*?]<\\/p>', 'g')
const str = `<p>
<sdfsdfsfsfsfsfs>
sdfsdfsdf<ssfssfsdf>
<a href="javascript:window.history.back();">Document selection</a></p>
<p><a href="http://www.scei.co.jp/legal/">Country / Region selection</a></p>`;
// 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