js if not undefined
if (typeof myVar !== "undefined") {
console.log("myVar is DEFINED");
}js if not undefined
if (typeof myVar !== "undefined") {
console.log("myVar is DEFINED");
}javascript check if undefined or null
if( typeof myVar === 'undefined' || myVar === null ){
// myVar is undefined or null
}check if variable is undefined or null jquery
if (variable == null) {
// variable is either null or undefined
}javascript check if 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
}js is undefined or null
var myVar=null;
if(myVar === null){
//I am null;
}
if (typeof myVar === 'undefined'){
//myVar is undefined
}javascript check undefined or null
var myVar=null;
if(myVar === null){
//I am null;
}
if (typeof myVar === 'undefined'){
//myVar is undefined
}Copyright © 2021 Codeinu
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