bower
Version:
The browser package manager
24 lines (22 loc) • 747 B
JavaScript
define(['./randHex', './choice'], function (randHex, choice) {
/**
* Returns pseudo-random guid (UUID v4)
* IMPORTANT: it's not totally "safe" since randHex/choice uses Math.random
* by default and sequences can be predicted in some cases. See the
* "random/random" documentation for more info about it and how to replace
* the default PRNG.
*/
function guid() {
return (
randHex(8)+'-'+
randHex(4)+'-'+
// v4 UUID always contain "4" at this position to specify it was
// randomly generated
'4' + randHex(3) +'-'+
// v4 UUID always contain chars [a,b,8,9] at this position
choice(8, 9, 'a', 'b') + randHex(3)+'-'+
randHex(12)
);
}
return guid;
});