Question

I am doing javascript validation for empty checking of a text field in my form.. I want to know which of the following is the best method and why?

Method 1

if($("#myField").val()==''){
alert("Cannot be empty");
}

Method 2

var check=$("#myField").val();
if(check==''){
alert("Cannot be empty");
}

Which of them is best?? Method 1 or Method 2..And why??

Answer 1

Use method 1 only, if you dont need the value of that input field again later in your code.

Use method 2 if you are reusing that value later in your code. But I’d advise to use a more meaningful variable name like fieldValue instead of check.