Answers for "javascript is null or empty check"

javascript syntax for check null or undefined or empty

if (typeof value !== 'undefined' && value) {
    //deal with value'
};

javascript check if string is empty

var string = "not empty";
if(string == ""){
  console.log("Please Add");
}
else{
  console.log("You can pass"); // console will log this msg because our string is not empty
}