js check null or empty code example
Example 1: javascript not null
if (variable !== null) {
console.log("Var is NOT null");
}
Example 2: 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
}
Example 3: javascript syntax for check null or undefined or empty
if (typeof value !== 'undefined' && value) {
//deal with value'
};