在不提交答案的情况下显示内容

时间:2016-03-23 04:17:41

标签: javascript

我希望测验应用在用户选择答案时自动转到下一个问题但是设置方式,用户必须点击提交回答然后下一个< / strong>然后它转到下一个问题。

我想完全删除按钮。

演示:http://output.jsbin.com/eRiSUhIB/1/

使用Javascript:

var quiz = [{
  "question": "What is the full form of IP?",
  "choices": ["Internet Provider", "Internet Port", "Internet Protocol"],
  "correct": "Internet Protocol"
}, {
  "question": "Who is the founder of Microsoft?",
  "choices": ["Bill Gates", "Steve Jobs", "Steve Wozniak"],
  "correct": "Bill Gates"
}, {
  "question": "1 byte = ?",
  "choices": ["8 bits", "64 bits", "1024 bits"],
  "correct": "8 bits"
}, {
  "question": "The C programming language was developed by?",
  "choices": ["Brendan Eich", "Dennis Ritchie", "Guido van Rossum"],
  "correct": "Dennis Ritchie"
}, {
  "question": "What does CC mean in emails?",
  "choices": ["Carbon Copy", "Creative Commons", "other"],
  "correct": "Carbon Copy"
}];


// define elements
var content = $("content"),
  questionContainer = $("question"),
  choicesContainer = $("choices"),
  scoreContainer = $("score"),
  submitBtn = $("submit");

// init vars
var currentQuestion = 0,
  score = 0,
  askingQuestion = true;

function $(id) { // shortcut for document.getElementById
  return document.getElementById(id);
}

function askQuestion() {
  var choices = quiz[currentQuestion].choices,
    choicesHtml = "";

  // loop through choices, and create radio buttons
  for (var i = 0; i < choices.length; i++) {
    choicesHtml += "<input type='radio' name='quiz" + currentQuestion +
      "' id='choice" + (i + 1) +
      "' value='" + choices[i] + "'>" +
      " <label for='choice" + (i + 1) + "'>" + choices[i] + "</label><br>";
  }

  // load the question
  questionContainer.textContent = "Q" + (currentQuestion + 1) + ". " +
    quiz[currentQuestion].question;

  // load the choices
  choicesContainer.innerHTML = choicesHtml;

  // setup for the first time
  if (currentQuestion === 0) {
    scoreContainer.textContent = "Score: 0 right answers out of " +
      quiz.length + " possible.";
    submitBtn.textContent = "Submit Answer";
  }
}

function checkAnswer() {
  // are we asking a question, or proceeding to next question?
  if (askingQuestion) {
    submitBtn.textContent = "Next Question";
    askingQuestion = false;

    // determine which radio button they clicked
    var userpick,
      correctIndex,
      radios = document.getElementsByName("quiz" + currentQuestion);
    for (var i = 0; i < radios.length; i++) {
      if (radios[i].checked) { // if this radio button is checked
        userpick = radios[i].value;
      }

      // get index of correct answer
      if (radios[i].value == quiz[currentQuestion].correct) {
        correctIndex = i;
      }
    }

    // setup if they got it right, or wrong
    var labelStyle = document.getElementsByTagName("label")[correctIndex].style;
    labelStyle.fontWeight = "bold";
    if (userpick == quiz[currentQuestion].correct) {
      score++;
      labelStyle.color = "green";
    } else {
      labelStyle.color = "red";
    }

    scoreContainer.textContent = "Score: " + score + " right answers out of " +
      quiz.length + " possible.";
  } else { // move to next question
    // setting up so user can ask a question
    askingQuestion = true;
    // change button text back to "Submit Answer"
    submitBtn.textContent = "Submit Answer";
    // if we're not on last question, increase question number
    if (currentQuestion < quiz.length - 1) {
      currentQuestion++;
      askQuestion();
    } else {
      showFinalResults();
    }
  }
}

function showFinalResults() {
  content.innerHTML = "<h2>You've complited the quiz!</h2>" +
    "<h2>Below are your results:</h2>" +
    "<h2>" + score + " out of " + quiz.length + " questions, " +
    Math.round(score / quiz.length * 100) + "%<h2>";
}

window.addEventListener("load", askQuestion, false);
submitBtn.addEventListener("click", checkAnswer, false);

1 个答案:

答案 0 :(得分:-1)

这应该完全做你想要的:)。希望它有所帮助!

  var quiz = [{
      "question": "What is the full form of IP?",
      "choices": ["Internet Provider", "Internet Port", "Internet Protocol"],
      "correct": "Internet Protocol"
    }, {
      "question": "Who is the founder of Microsoft?",
      "choices": ["Bill Gates", "Steve Jobs", "Steve Wozniak"],
      "correct": "Bill Gates"
    }, {
      "question": "1 byte = ?",
      "choices": ["8 bits", "64 bits", "1024 bits"],
      "correct": "8 bits"
    }, {
      "question": "The C programming language was developed by?",
      "choices": ["Brendan Eich", "Dennis Ritchie", "Guido van Rossum"],
      "correct": "Dennis Ritchie"
    }, {
      "question": "What does CC mean in emails?",
      "choices": ["Carbon Copy", "Creative Commons", "other"],
      "correct": "Carbon Copy"
    }];


    // define elements
     var content = $("content"),
     questionContainer = $("question"),
     choicesContainer = $("choices"),
     scoreContainer = $("score"),
     submitBtn = $("submit");

  // init vars
  var currentQuestion = 0,
  score = 0,
  askingQuestion = true;

  function $(id) { // shortcut for document.getElementById
   return document.getElementById(id);
  }

  function askQuestion() {
  var choices = quiz[currentQuestion].choices,
   choicesHtml = "";
  }