Answers for "undifined variable compare"

19

js if not undefined

if (typeof myVar !== "undefined") {
    console.log("myVar is DEFINED");
}
Posted by: Guest on October-23-2019
1

assign this value or if it is undefined this other value javascript

var x; //variable to change
var y; //higher priority variable
var z = 12; //lower priority variable
x = !(y === undefined) ? y : z;
console.log(x); //12
Posted by: Guest on November-30-2019

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