一旦测验结束,我正试图在测验中重置进度条。
如果您按照以下链接进行操作:
以下是工作代码http://codepen.io/fun/pen/RRPdbb?editors=1010
的链接增加进度条的部分是
progress += questions.length * 100 / questions.length / questions.length;
if ($('#progress').val() >= 100) {
$('#progress').val(0);
}
$('#progress').val(progress);
但是这只会增加而不会重置。
希望你能提供帮助,这是代码。
var test_status, options, pos = 0,
question, optA, optB, optC, option_radio, user_guess, correct = 0,
progress = 0;
var questions = [
['What is 4 * 4?', '16', '34', '18', 'A'],
['What is 80 / 20?', '49', '4', '3', 'B'],
['What is 760 - 160?', '650', '500', '600', 'C'],
['What is 330 + 150?', '480', '800', '400', 'A']
];
// Function to get ids
function _(x) {
return document.getElementById(x);
};
// Function to ask the question
function askQuestion() {
// End of quiz
if (pos >= questions.length) {
test_status.innerHTML = 'Test Complete. You scored ' + correct + ' out of ' + questions.length;
options.innerHTML = '<br>' + 'To attempt the quiz again' + '<br><br>' + '<button onclick = "askQuestion()"> Click here</button>';
pos = 0;
correct = 0;
return false;
}
// Get position of question
question = questions[pos][0];
// Get positions of options
optA = questions[pos][1];
optB = questions[pos][2];
optC = questions[pos][3];
// Get test status id
test_status = _('test_status');
// Get options id
options = _('options');
// Print question stage
test_status.innerHTML = "<h2> You are on question " + (pos + 1) + " out of " + questions.length + "</h2>";
// Print current question
options.innerHTML = "<h3>" + question + "</h3>";
// Print options for Q
options.innerHTML += "<input type ='radio' name ='options' value ='A'> " + optA + "<br>";
options.innerHTML += "<input type ='radio' name ='options' value ='B'> " + optB + "<br>";
options.innerHTML += "<input type ='radio' name ='options' value ='C'> " + optC + "<br><br>";
// Add a submit button
options.innerHTML += "<button onclick ='checkAnswer()'>submit</buton>";
};
// Check answer
function checkAnswer() {
// Get name attr from raio
option_radio = document.getElementsByName('options');
// loop through each radio
for (var i = 0; i < option_radio.length; i++) {
// check if option_radio is check
if (option_radio[i].checked) {
user_choice = option_radio[i].value;
}
}
// check is correct
if (user_choice == questions[pos][4]) {
correct++;
// increment progress based on questions length
}
pos++;
progress += questions.length * 100 / questions.length / questions.length;
if ($('#progress').val() >= 100) {
$('#progress').val(0);
}
$('#progress').val(progress);
askQuestion();
};
askQuestion();
答案 0 :(得分:3)
这是一个逻辑错误。只需在检查之前设置值即可。
$('#progress').val(progress);
if ($('#progress').val() >= 100) {
$('#progress').val(0);
}
答案 1 :(得分:0)
检查变量progress的值而不是元素的值
progress += questions.length * 100 / questions.length / questions.length;
if (progress >= 100) {
$('#progress').val(0);
}
$('#progress').val(progress);