JAVASCRIPT

Regular expression: Match everything after a particular word

re.search(r'(?<=test :)[^.s]*',text)

Regular expression: Match everything after a particular word

test = 'data:image/jpeg;base64,/9j/4AAQSkZJRgABAQAAAQAB'
var regex = /.*?base64(.*?)/g;
var match = regex.exec(test);
console.log(match[1]);