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Max Giselson 21 October 2018 →
There is a small typo in || matrix fyi:)
Cemil Yener 27 September 2018 →
multi task input process output data stroage
Amit Shrivastava 18 February 2018 →
This is my second lesson only , but having struggle to learn JS for about 8 months now, if i can learn some thing here , i will buy you a nice vegetable salad
georgii ivannikov 02 November 2017 →
Hello there actually 300000, not 300000000
Pavel Perminov 23 August 2017 →
Do I need to develop some "through ass" regex because of JS did not support look behind? Or this exercise is a some kind of feature?
Tell me please, why this solution doesn't work?
const isPrime = (num) => {
for (let i = 2; i <= num && num%i !== 0; i++) {
if (i === num) {
return true;
}
}
return false;
};
export default isPrime;
OUTPUT:
FAIL __tests__/solution.test.js
● prime
expect(received).toBeTruthy()
Expected value to be truthy, instead received
false
at Object.<anonymous>.test (__tests__/solution.test.js:14:65)
Hi! Thank you for such awesome lessons! This task is very tough, however. Even after looking at the teacher's solution I didn't understand the last part, namely, why we need 'end' in it?
return begin + sequenceSum(begin + 1, end);
I don't see how it's used in the function: we don't use it for addition. Could you please explain? Thank you!
Help me, please. I don;t understand my mistake. The Output said so amasing thing: ` FAIL tests/solution.test.js ● solution
expect(received).toBe(expected)
Expected value to be (using ===):
"Hello, World!"
Received:
", !"
at Object.<anonymous>.test (__tests__/solution.test.js:4:79)
✕ solution (6ms)
Test Suites: 1 failed, 1 total Tests: 1 failed, 1 total`
My code is:
```import * as strings from './strings';
// BEGIN (write your solution here) const solution = (str) => { let result = ''; for (let i = 0; i < strings.length(str); i += 1) { if (strings.toUpperCase(str[i]) === str[i]) { result = result + str[i]; } }
return String(result); }; export default solution; // END
What's wrong with letters?
As for me, the cause lies in the
if (strings.toUpperCase(str[i]) === str[i]) { result = result + str[i]; }
console.log ("Hello, World!");