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JavaScript JavaScript Loops, Arrays and Objects Tracking Multiple Items with Arrays Build a Quiz Challenge, Part 2

Can`t I use toLowercase() to variable?

When I use toLowercase() below(variables) code I`m unable to get the result..!

var quiz= [
  ['Your name?','Neil'],
  ['neil`s age',24],
  ['Aim of neil is film maker',true]
var answer;
var question;
var response;
var correctanswers = 0;
var html;

function print(message) {

for(var i=0;i < quiz.length; i+=1){

  response = parseInt(prompt(question));
  if(response.toLowerCase()=== answer.toLowerCase()){

html = "you got "+ correctanswers+" question(s) right?";

Yes you can use lowerCase() in a variable if its value is a string, I see in your code that you're parsing response into an integer before the if statement, so maybe that's your mistake? try to console.log(typeof response) and see what you get.

1 Answer

Steven Parker
Steven Parker
229,921 Points

Edwin's right .. you can't toLowerCase() a numeric value, which is what you are putting into response. But you need to rethink that anyway, since your answers are a mix of strings and numbers.

The best way to get the program working would probably be to store all your answers as strings, even if the answer looks like a number. For logic answers, maybe use 'yes' and 'no' instead of 'true' and 'false'. Just structure the question to ask for that kind of response. Then eliminate the parseInt completely.