Form Validation

Question

hi
what is " && n2.value ! "?

function validate() {
var n1 = document.getElementById("num1");
var n2 = document.getElementById("num2");
if(n1.value != "" && n2.value != "") {
if(n1.value == n2.value) {
return true;
}
}
alert("The values should be equal and not blank");
return false;
}

Answer 1

In addition to Nomeh's answer, take a look at this text about logical operators:

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Logical_Operators

Answer 2

You can separe conditions in if () with &&, and the code in execute if all the conditions are true

Answer 3

Sorry, my english isn't very good

Answer 4

***.value != ""

Means that the value of the input element must not be empty which means "" in .js