Can't display the pop-up questions I wrote, but go to the alert(total correct answer) directly. I wrote it by following the tutorial video. Can anyone help me? Thank you!!!
var questions = [
{
prompt:"What is the color of banana?\n(a)red\n(b)green\n(c)yellow", // \n = 換行
answer:"c"
},
{
prompt:"What is the color of strawberry?\n(a)red\n(b)green\n(c)yellow",
answer:"a"
},
{
prompt:"how many centimeters is equal to One meter?\n(a)1\n(b)10\n(c)100",
answer:"c"
}
]
var score = 0;
for(var i=0; i<questions.lengths; i++){
var input=prompt(questions[i].prompt);
if(input==questions[i].answer){
score++;
alert("Answer Correct!");
}
else{
alert("Answer Wrong!");
}
}
alert("Total correct answer: "+ score );
questions.lengths should be questions.length. You can read more about how to get the length of an array in Javascript here
var questions = [
{
prompt:"What is the color of banana?\n(a)red\n(b)green\n(c)yellow", // \n = 換行
answer:"c"
},
{
prompt:"What is the color of strawberry?\n(a)red\n(b)green\n(c)yellow",
answer:"a"
},
{
prompt:"how many centimeters is equal to One meter?\n(a)1\n(b)10\n(c)100",
answer:"c"
}
]
var score = 0;
for(var i=0; i<questions.length; i++){ // This is the line which was incorrect
var input=prompt(questions[i].prompt);
if(input==questions[i].answer){
score++;
alert("Answer Correct!");
}
else{
alert("Answer Wrong!");
}
}
alert("Total correct answer: "+ score );You have a typo:
for(var i=0; i<questions.length; i++){
length - not lengths