Pls can anyone explain to me why the (else if) condition is not working in the code below even when it's condition is meat???

Question

I want to understand why the (else if) statement is not executed when (buy =false) i. E assigned false.

var buy = prompt("place your order","order");

x= buy;

if(buy=true){alert("thanks for ordering a " + x);}

else if(buy=false){alert("thanks for wasting DATA on our site");}

else {alert("");}

Answer 1

You need to use == for comparisons. Single = is used to assign a value to a variable. So in the if, you're assigning true to buy, and since buy is true, the if runs and the else if is ignored.

if (buy == true)
{
}
else if (buy == false)
{
}
else
{
}

Answer 2

Firstly, = is not a comparison. Use == to compare a condition.

x = buy; doesn't make sense. What is x?
Fix:
var x = buy;
Even this isn't neccessary though, you can just use buy.

Also, for booleans comparing a condition is redundant.
Just write: if(buy).
However, prompt doesn't return you a boolean it returns you what the user enters. If the user clicks cancel it returns null.

So:
if(buy != null)
{
// user entered something
}
Info on prompt:
https://www.w3schools.com/jsref/met_win_prompt.asp

Answer 3

x=buy?