undefined value check in javascript

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Marlene
27 May 2018
1if (typeof myVariable === 'undefined'){
2    //myVariable is undefined
3}
Elena
25 Jan 2018
1
2function divisors(integer) {
3    let  i, flag = true; 
4       let arr=[];       
5           
6            
7            for(i = 2; i <= integer - 1; i++) {
8                if (integer % i == 0) { 
9                    flag = false; 
10                     arr.push(i)
11                } 
12            }
13            if (flag == true) 
14              console.log(integer + " is prime"); 
15            else
16                console.log(arr)
17}
18console.log(divisors(15))
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