js check null

if (variable === null) { //Executes only if variable is null but not undefined
  //Code here
}

if (variable == null) { //Executes if variable is null OR undefined
  //Code here
}

3.67
3
Teyvk 95 points

                                    if (Var === null) { 
//code goes here
}

3.67 (3 Votes)
0
3.86
7
S.Jennings 110 points

                                    if(!pass || !cpass || !email || !cemail || !user) {
   // Code here
}
// Which will check for empty strings (""), null, undefined, false and the numbers 0 and NaN

3.86 (7 Votes)
0
3.88
10
Windfox 90 points

                                    var myVar=null;<br/><br/>if(myVar === null){<br/>    //I am null;<br/>}<br/><br/>if (typeof myVar === 'undefined'){<br/>    //myVar is undefined<br/>}<br/>

3.88 (8 Votes)
0
3.5
2

                                    if (Var === null) { 
//code goes here
}

3.5 (2 Votes)
0
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