const regex = /.*(\.[a-zA-Z0-9]*)/g;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('.*(\\.[a-zA-Z0-9]*)', 'g')
const str = `.myClass{color:red;}
.myClass .myOtherClass{color:green;}
#something .somethingElse{color:blue;}
.something #myIdhere{color:purple;}
#myId {color:black}
.myClass1, .myClass2{colour:green}
.myClass span{colour:purple}
.myPseudo:after{}`;
// 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