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JavaScript

Posted by Narongkrit Khieopraphatsorn
Narongkrit Khieopraphatsorn
875 Points

It doesn't work

var question = 4; var result = 0; var askQuestion = ' [ ' + question + ' questions left ] '; var q1 = prompt('Is the water blue or red?' + askQuestion); if(q1 === 'blue') result += 1; question = 3; var q2 = prompt('Is the blood blue or red?' + askQuestion); if(q2 === 'red') result += 1; question = 2; var q3 = prompt('What is the capital of Thailand?' + askQuestion); if(q3 === 'Bangkok') result += 1; question = 1; var q4 = prompt('What is the capital of England?' + askQuestion); if(q4 === 'London') result += 1; question = 0; var q5 = prompt('What is the captal of china?' + askQuestion); if(q5 === 'Beijing') result += 1;

alert('There are ' + result +' correct answers');

if(result === 5) document.write('Gold Crown'); else if(result === 4 || result === 3) document.write('Silver Crown'); else if(result === 2 || result === 1) document.write('Bronze Crown'); else document.write('No Crown');

I want to know why the 'askQuestion' has the problem; The first question: Is the water blue or red? [ 4 questions left] The 2nd question: Is the blood blue or red? [ 4 questions left] The 3rd question: What is the capital of Thailand? [ 4 questions left]

Steven Parker
Steven Parker
221,328 Points
Steven Parker
Steven Parker
221,328 Points

When posting code, always use the instructions for code formatting in the Markdown Cheatsheet pop-up below the "Add an Answer" area. :arrow_heading_down: Or watch this video on code formatting.

1 Answer

Steven Parker
Steven Parker
221,328 Points
Steven Parker
Steven Parker
221,328 Points

The string askQuestion never changes.

You create that string before the first question is asked, and then included it with every question. But it's just a plain string that never changes.

Perhaps you intended to create a function instead of a string?

var askQuestion = () => ' [ ' + question + ' questions left ]';   // function instead of string
var q1 = prompt("Is the water blue or red?" + askQuestion());     // function called using ()'s
Narongkrit Khieopraphatsorn
Narongkrit Khieopraphatsorn
875 Points

OK, But I want to create a string. Why is it just a plain string that never changes?

Steven Parker
Steven Parker
221,328 Points
Steven Parker
Steven Parker
221,328 Points

You did create a string, and assigned it to a variable. Any variable that is only assigned once never changes. But if you make a function to create the string, then everytime you call that function it makes the string fresh.

Narongkrit Khieopraphatsorn
Narongkrit Khieopraphatsorn
875 Points

Ok, I got it. Thank you