Method question

Question

Hello, complete newbie hwre. Why does following script return Paul 90 instead of Paul 100. Thanks!
var test = 100;
if (test>110);
{
var test = ("90");
}

function person(name, age) {
this.name = name;
this.age = age;
this.changeName = function (name) {
this.name = name;
}
this.changeAge = function (age){
this.age=test;
}
}

var p = new person("David", 21);
p.changeName("John");

var c = new person ("Paul",23);
c.changeAge("34");

document.write(p.name + "\n" + p.age + "<br>");
document.write(c.name + "\n" + c.age);

Answer 1

Ville Keituri
The reason was because when you made that "if" statement, you terminated it without giving it a body ,by placing a semi-colon immediately after it.

Meaning
========
if(test > 100);
{
test = ("90")
}

due to the semi-colon after "if(test > 100)", the if statement is terminated prematurely, and as such

{
test =("90");
}

is executed as a block on its own, thus "test = 90".

If you remove the semi-colon after "if(test > 100)", you'll get the desired result.

Here's a correct version of the code

https://code.sololearn.com/WZ8C29Q7zSMs/?ref=app

Answer 2

Thank you for explanation!