Answers for "if not undefined javascript"

19

js if not undefined

if (typeof myVar !== "undefined") {
    console.log("myVar is DEFINED");
}
Posted by: Guest on October-23-2019
3

how to check if object is undefined in javascript

if (typeof something === "undefined") {
    alert("something is undefined");
}
Posted by: Guest on November-26-2019
0

if not undefined javascript

if(typeof myVar !== "undefined")
Posted by: Guest on March-10-2021
0

undefined value check in javascript

function divisors(integer) {
    let  i, flag = true; 
       let arr=[];       
           
            
            for(i = 2; i <= integer - 1; i++) {
                if (integer % i == 0) { 
                    flag = false; 
                     arr.push(i)
                } 
            }
            if (flag == true) 
              console.log(integer + " is prime"); 
            else
                console.log(arr)
}
console.log(divisors(15))
Posted by: Guest on October-11-2020
-3

How can I check whether a variable is defined in Node Js

if (query){
   doStuff();
}
Posted by: Guest on May-22-2020

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