RegEx to extract all matches from string using RegExp.exec

str.match(pattern), if pattern has the global flag g, will return all the matches as an array.

For example:

const str = 'All of us except @Emran, @Raju and @Noman were there';
console.log(
  str.match(/@\w*/g)
);
// Will log ["@Emran", "@Raju", "@Noman"]

To loop through all matches, you can use the replace function:

var re = /\s*([^[:]+):\"([^"]+)"/g;
var s = '[description:"aoeu" uuid:"123sth"]';

s.replace(re, function(match, g1, g2) { console.log(g1, g2); });

Continue calling re.exec(s) in a loop to obtain all the matches:

var re = /\s*([^[:]+):\"([^"]+)"/g;
var s = '[description:"aoeu" uuid:"123sth"]';
var m;

do {
    m = re.exec(s);
    if (m) {
        console.log(m[1], m[2]);
    }
} while (m);

Try it with this JSFiddle: https://jsfiddle.net/7yS2V/

This is a solution

var s = '[description:"aoeu" uuid:"123sth"]';

var re = /\s*([^[:]+):\"([^"]+)"/g;
var m;
while (m = re.exec(s)) {
  console.log(m[1], m[2]);
}

This is based on lawnsea's answer, but shorter.

Notice that the `g' flag must be set to move the internal pointer forward across invocations.