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Js if variable null

Code examples

15
0

javascript check for null variables 

var myVar=null;

if(myVar === null){
    //I am null;
}

if (typeof myVar === 'undefined'){
    //myVar is undefined
}
8
0

javascript check if undefined or null 

if( typeof myVar === 'undefined' || myVar === null ){
    // myVar is undefined or null
}

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