Refer to the code below:
01 const exec = (item, delay) =>{
02 new Promise(resolve => setTimeout( () => resolve(item), delay)),
03 async function runParallel() {
04 Const (result1, result2, result3) = await Promise.all{
05 [exec ('x', '100') , exec('y', 500), exec('z', '100')]
06 );07 return `parallel is done: $(result1) $(result2)$(result3)`;
08 }}}
Which two statements correctly execute the runParallel () function?
Choose 2 answers
A developer needs to test this function:
01 const sum3 = (arr) => (
02 if (!arr.length) return 0,
03 if (arr.length === 1) return arr[0],
04 if (arr.length === 2) return arr[0] + arr[1],
05 return arr[0] + arr[1] + arr[2],
06 );
Which two assert statements are valid tests for the function?
Choose 2 answers
Refer to the code below:
01 let car1 = new promise((_, reject) =>
02 setTimeout(reject, 2000, ''Car 1 crashed in''));
03 let car2 = new Promise(resolve => setTimeout(resolve, 1500, ''Car 2
completed''));
04 let car3 = new Promise(resolve => setTimeout (resolve, 3000, ''Car 3
Completed''));
05 Promise.race([car1, car2, car3])
06 .then(value => (
07 let result = $(value) the race. `;
08 ))
09 .catch( arr => (
10 console.log(''Race is cancelled.'', err);
11 ));
What is the value of result when Promise.race executes?
Refer to the code below:
for(let number =2 ; number <= 5 ; number += 1 ) {
// insert code statement here
}
The developer needs to insert a code statement in the location shown. The code
statement has these requirements:
1. Does require an import
2. Logs an error when the boolean statement evaluates to false
3. Works in both the browser and Node.js
Which meet the requirements?
