Question 196689 in Html Question posted in
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Html – Javascript checking if variable is a concret number

I have a javascript code where I extract the day of the week number. I want to check if that number is a especific number so I can put an output or another.
This is my Javascript code:


            date = new Date().getDay();

            if (typeof date == "4") {

                document.write("Dijous");
            }

I run this code in my html file but I get no output.

I have tried to run this code like you see.

Tags:

2

Answers


  1. 0 
    date = new Date().getDay();

            if (date === 4) {

                console.log("Dijous");
            }

    Compare first by the number, not a string of a number.

    Second, to log something, we use console.log()

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  2. 0

    What you want to do is compare the day by value not by the typeof the day. typeof date would return "number".

    The typeof operator returns a string indicating the type of the
    operand’s value.

    developer.mozilla.org

    Also I recommend comparing with the value 4 not "4" since Date::getDay() returns a number. Comparing the string only works due to the implicit conversion and the double equal ==.

    const date = new Date().getDay();

if (date === 4) {
  console.log("Dijous");
}
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