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added guard clause

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This commit is contained in:
Alex Booker 2015-08-14 18:12:27 +01:00
parent 78634330de
commit 91fb2972b4
1 changed files with 3 additions and 0 deletions
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3
js/passwordGenerator.js
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@ -1,5 +1,8 @@
var passwordGenerator = (function() {
var generateRandomNum = function (max) {
if (!window.crypto || !window.crypto.getRandomValues) {
throw new Error('Unsupported browser.');
}
var array = new Uint8Array(1);
window.crypto.getRandomValues(array);
var range = max + 1;