JavaScript实现答题评分功能页⾯本⽂实例为⼤家分享了JavaScript实现答题评分功能的具体代码，供⼤家参考，具体内容如下
效果图
直接上代码
HTML部分
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<link rel="stylesheet" href="./index.css" >
<link rel="stylesheet" href="./timeTo.css" >
<title>JavaScript实现⼀个在线做题测试⽹页</title>
</head>
<body>
<div class="testContainer">
<h3>在线答题</h3>
<div class="testHeader">
<div class="testLeft">测试已开始，请开始作答，请在30分钟内完成答题</div>
<div class="testRight" id="countdown-11"></div>
</div>
<ul class="testContent">
</ul>
<div onclick="submitAnswer()" id="submitBtn">提交</div>
</div>
<script src="./jquery-2.1.1.min.js"></script>
<script src="./jquery.time-to.js"></script>
<script src="./index.js"></script>
</body>
</html>
CSS部分
index.css
timeTo.css
figure, figcaption {
display: block;
}
.transition {
-webkit-transition: top 400ms linear;
-moz-transition: top 400ms linear;
-ms-transition: top 400ms linear;
-o-transition: top 400ms linear;
transition: top 400ms linear;
}
.timeTo {
font-family: Tahoma, Verdana, Aial, sans-serif;
font-size: 28px;
line-height: 108%;
font-weight: bold;
height: 32px;
}
.timeTo span {
vertical-align: top;
}
.timeTo.timeTo-white div {
color: black;
background: #ffffff; /* Old browsers */
background: -moz-linear-gradient(top, #ffffff 38%, #cccccc 100%); /* FF3.6+ */
background: -webkit-gradient(linear, left top, left bottom, color-stop(38%,#ffffff), color-stop(100%,#cccccc)); /* Chrome,Safari4+ */
background: -webkit-linear-gradient(top, #ffffff 38%,#cccccc 100%); /* Chrome10+,Safari5.1+ */
background: -o-linear-gradient(top, #ffffff 38%,#cccccc 100%); /* Opera 11.10+ */
background: -ms-linear-gradient(top, #ffffff 38%,#cccccc 100%); /* IE10+ */
background: linear-gradient(to bottom, #ffffff 38%,#cccccc 100%); /* W3C */
filter: progid:adient( startColorstr='#ffffff', endColorstr='#cccccc',GradientType=0 ); /* IE6-9 */
}
.timeTo.timeTo-black div {
color: white;
background: #45484d; /* Old browsers */
background: -moz-linear-gradient(top, #45484d 0%, #000000 100%); /* FF3.6+ */
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#45484d), color-stop(100%,#000000)); /* Chrome,Safari4+ */ background: -webkit-linear-gradient(top, #45484d 0%,#000000 100%); /* Chrome10+,Safari5.1+ */
background: -o-linear-gradient(top, #45484d 0%,#000000 100%); /* Opera 11.10+ */
background: -ms-linear-gradient(top, #45484d 0%,#000000 100%); /* IE10+ */
background: linear-gradient(to bottom, #45484d 0%,#000000 100%); /* W3C */
filter: progid:adient( startColorstr='#45484d', endColorstr='#000000',GradientType=0 ); /* IE6-9 */
}
.timeTo.timeTo-black .timeTo-alert {
background: #a74444; /* Old browsers */
background: -moz-linear-gradient(top, #a74444 0%, #3f0000 67%); /* FF3.6+ */
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#a74444), color-stop(67%,#3f0000)); /* Chrome,Safari4+ */ background: -webkit-linear-gradient(top, #a74444 0%,#3f0000 67%); /* Chrome10+,Safari5.1+ */
background: -o-linear-gradient(top, #a74444 0%,#3f0000 67%); /* Opera 11.10+ */
background: -ms-linear-gradient(top, #a74444 0%,#3f0000 67%); /* IE10+ */
background: linear-gradient(to bottom, #a74444 0%,#3f0000 67%); /* W3C */
filter: progid:adient( startColorstr='#a74444', endColorstr='#3f0000',GradientType=0 ); /* IE6-9 */
}
.timeTo.timeTo-white .timeTo-alert {
background: #ffffff; /* Old browsers */
background: -moz-linear-gradient(top, #ffffff 35%, #e17373 100%); /* FF3.6+ */
background: -webkit-gradient(linear, left top, left bottom, color-stop(35%,#ffffff), color-stop(100%,#e17373)); /* Chrome,Safari4+ */ background: -webkit-linear-gradient(top, #ffffff 35%,#e17373 100%); /* Chrome10+,Safari5.1+ */
background: -o-linear-gradient(top, #ffffff 35%,#e17373 100%); /* Opera 11.10+ */
background: -ms-linear-gradient(top, #ffffff 35%,#e17373 100%); /* IE10+ */
background: linear-gradient(to bottom, #ffffff 35%,#e17373 100%); /* W3C */
filter: progid:adient( startColorstr='#ffffff', endColorstr='#e17373',GradientType=0 ); /* IE6-9 */
}
.timeTo figure {
display: inline-block;
margin: 0;
padding: 0;
}
.timeTo figcaption {
text-align: center;
/*font-size: 12px;*/
line-height: 80%;
font-weight: normal;
color: #888;
}
.timeTo div {
position: relative;
display: inline-block;
width: 25px;
height: 30px;
border-top: 1px solid silver;
border-right: 1px solid silver;
border-bottom: 1px solid silver;
overflow: hidden;
}
.timeTo div.first {
border-left: 1px solid silver;
}
.timeTo ul {
list-style-type: none;
margin: 0;
padding: 0;
position: absolute;
left: 3px;
}
.timeTo ul li {
margin: 0;
padding: 0;
list-style: none;
}
jquery.time-to.js部分
/**
* Time-To jQuery plug-in
* Show countdown timer or realtime clock
*
* @author Oleksii Teterin <altmoc@gmail>
* @version 1.3.0
* @license MIT /licenses/MIT
* @date 2019-05-14
* @host github/Lexxus/jq-timeTo
*/
(function (factory) {
if (typeof define === 'function' && define.amd) {
// AMD (RequireJS)
define(['jquery'], factory);
} else if (typeof exports === 'object') {
// CommonJS (Node)
/* eslint-disable import/no-unresolved */
} else {
/
/ globals
factory(jQuery);
}
}(function ($) {
var SECONDS_PER_DAY = 86400;
var SECONDS_PER_HOUR = 3600;
/* eslint-disable no-multi-spaces */
var defaults = {
callback: null,  // callback function for exec when timer out
step: null,  // callback function to exec every {stepCount} ticks
stepCount: 1,  // number of ticks to increment before executing stepCount
captionSize: 0,  // font-size by pixels for captions, if 0 then calculate automaticaly
countdown: true,  // is countdown or real clock
countdownAlertLimit: 10, // limit in seconds when display red background
displayCaptions: false, // display captions under digit groups
displayDays: 0,  // display day timer, count of days digits
displayHours: true, // display hours
fontFamily: 'Verdana, sans-serif',
fontSize: 0,  // font-size of a digit by pixels (0 - use CSS instead)
lang: 'en',  // language of caption
languages: {},  // extra or overridden languages
seconds: 0,  // timer's countdown value in seconds
start: true,  // true to start timer immediately
theme: 'white',  // 'white' or 'black' theme fo timer's view
width: 25,  // width of a digit area
height: 30,  // height of a digit area
gap: 11,  // gap size between numbers
vals: [0, 0, 0, 0, 0, 0, 0, 0, 0], // private, current value of each digit  limits: [9, 9, 9, 2, 9, 5, 9, 5, 9], // private, max value of each digit  iSec: 8,  // private, index of second digit
iHour: 4,  // private, index of hour digit
tickTimeout: 1000, // timeout betweet each timer tick in miliseconds  intervalId: null, // private
tickCount: 0  // private
};
var methods = {
start: function (sec) {
var intervalId;
if (sec) {
init.call(this, sec);
intervalId = setTimeout(tick.bind(this), 1000);
// save start time
this.data('ttStartTime', $.now());
this.data('intervalId', intervalId);
}
},
stop: function () {
var data = this.data();
if (data.intervalId) {
clearTimeout(data.intervalId);
this.data('intervalId', null);
}
return data;
},
reset: function (sec) {
var data = methods.stop.call(this);
var secs = typeof sec === 'undefined' ? data.seconds : sec;
this.find('div').css({ backgroundPosition: 'left center' });
this.find('ul').parent().removeClass('timeTo-alert');
init.call(this, secs, true);
}
};
var dictionary = {
en: { days: 'days', hours: 'hours', min: 'minutes', sec: 'seconds' },
ru: { days: 'дней', hours: 'часов', min: 'минут', sec: 'секунд' },
ua: { days: 'днiв', hours: 'годин', min: 'хвилин', sec: 'секунд' },
de: { days: 'Tag', hours: 'Uhr', min: 'Minuten', sec: 'Secunden' },
fr: { days: 'jours', hours: 'heures', min: 'minutes', sec: 'secondes' }, es: { days: 'días', hours: 'horas', min: 'minutos', sec: 'segundos' }, sp: { days: 'días', hours: 'horas', min: 'minutos', sec: 'segundos' }, it: { days: 'giorni', hours: 'ore', min: 'minuti', sec: 'secondi' },
nl: { days: 'dagen', hours: 'uren', min: 'minuten', sec: 'seconden' },
no: { days: 'dager', hours: 'timer', min: 'minutter', sec: 'sekunder' }, pt: { days: 'dias', hours: 'horas', min: 'minutos', sec: 'segundos' },
tr: { days: 'gün', hours: 'saat', min: 'dakika', sec: 'saniye' },
pl: { days: 'dni', hours: 'godziny', min: 'minuty', sec: 'secundy' } };
/* eslint-enable no-multi-spaces */
if (typeof $.ansition === 'undefined') {
$.ansition = (function () {
var thisBody = document.body || document.documentElement;
var thisStyle = thisBody.style;
var support = ansition !== undefined
|| thisStyle.WebkitTransition !== undefined
|| thisStyle.MozTransition !== undefined
|| thisStyle.MsTransition !== undefined
|| thisStyle.OTransition !== undefined;
return support;
}());
}
$.fn.timeTo = function () {
var options = {};
var now = w();
var j, arg, num, method, time, days, tt, sec, m, t;
for (j = 0; j < arguments.length; j += 1) {
arg = arguments[j];
if (j === 0 && typeof arg === 'string') {
method = arg;
} else if (typeof arg === 'object') {
if (Time === 'function') {
// arg is a Date object
options.timeTo = arg;
} else {
// arg is an options object
options = $.extend(options, arg);
}
} else if (typeof arg === 'function') {
// arg is callback
options.callback = arg;
} else {
num = parseInt(arg, 10);
// arg is seconds of timeout
if (!isNaN(num)) {
options.seconds = num;
}
}
}
/
/ set time to countdown to
if (options.timeTo) {
if (Time) {
// set time as date object
time = Time();
} else if (typeof options.timeTo === 'number') {
// set time as integer in millisec
time = options.timeTo;
}
if (time > now) {
options.seconds = Math.floor((time - now) / 1000);
} else {
options.seconds = 0;
}
} else if (options.time || !options.seconds) {
time = options.time;
if (!time) {
time = new Date(now);
}
if (typeof time === 'object' && Time) {
options.seconds = (Date() * SECONDS_PER_DAY) + (Hours() * SECONDS_PER_HOUR) +  (Minutes() * 60) + Seconds();
} else if (typeof time === 'string') {
tt = time.split(':');
sec = 0;
m = 1;
while (tt.length) {
t = tt.pop();
sec += t * m;
m *= 60;
}
options.seconds = sec;
}
}
if (untdown !== false
&& options.seconds > SECONDS_PER_DAY
&& typeof options.displayDays === 'undefined') {
days = Math.floor(options.seconds / SECONDS_PER_DAY);
options.displayDays = (days < 10 && 1) || (days < 100 && 2) || 3;
} else if (options.displayDays === true) {
options.displayDays = 3;
} else if (options.displayDays) {
options.displayDays = options.displayDays > 0 ? Math.floor(options.displayDays) : 3;
}
return this.each(function () {
var $this = $(this);
var data = $this.data();
var defs, opt, i, css, language, left, ulhtml, style, dhtml1, dhtml2, dot2, maxWidth,
captionSize, fsStyleVal, fsStyle, thtml, marginRight, dhtml, $digits, dif, vals, limits;
if (data.intervalId) {
clearInterval(data.intervalId);
data.intervalId = null;
}
if (!data.vals) {
/
/ new clock
if (data.opt) {
opt = data.options;
} else {
opt = options;
}
// clone the defaults object
defs = Object.keys(defaults).reduce(function (obj, key) {
if (Array.isArray(defaults[key])) {
obj[key] = defaults[key].slice(0);
} else {
obj[key] = defaults[key];
}
return obj;
}, {});
data = $.extend(defs, opt);
data.options = opt;
data.height = und((data.fontSize * 100) / 93) || data.height;
data.width = und((data.fontSize * 0.8) + (data.height * 0.13)) || data.width;
data.displayHours = !!(data.displayDays || data.displayHours);
css = {
fontFamily: data.fontFamily
};
if (data.fontSize > 0) {
css.fontSize = data.fontSize + 'px';
}
language = data.languages[data.lang] || dictionary[data.lang];
$this
.addClass('timeTo')
.addClass('timeTo-' + data.theme)
.css(css);
left = und(data.height / 10);
ulhtml = '<ul ><li>0</li><li>0</li></ul></div>';
style = data.fontSize
' '
: ' ';
dhtml1 = '<div class="first"' + style + '>' + ulhtml;
dhtml2 = '<div' + style + '>' + ulhtml;
dot2 = '<span>:</span>';
maxWidth = und((data.width * 2) + 3);
captionSize = data.captionSize || (data.fontSize && und(data.fontSize * 0.43));
fsStyleVal = captionSize ? 'font-size:' + captionSize + 'px;' : '';
fsStyle = captionSize ? ' ' : '';
thtml = (data.displayCaptions
(data.displayHours
'<figure >$1<figcaption' + fsStyle + '>'
+ language.hours + '</figcaption></figure>' + dot2
: '')
+ '<figure >$1<figcaption' + fsStyle + '>' + language.min
+ '</figcaption></figure>' + dot2
+ '<figure >$1<figcaption' + fsStyle + '>' + language.sec
+ '</figcaption></figure>'
: (data.displayHours ? '$1' + dot2 : '') + '$1' + dot2 + '$1'
).replace(/\$1/g, dhtml1 + dhtml2);
if (data.displayDays > 0) {
marginRight = und(data.fontSize * 0.4 || defaults.gap);
dhtml = dhtml1;
for (i = data.displayDays - 1; i > 0; i -= 1) {
dhtml += i === 1
: dhtml2;
}
if (data.displayDays === 1) {
dhtml = place('">', 'margin-right:' + marginRight + 'px">');
}
thtml = (data.displayCaptions
'<figure >$1'
+ '<figcaption >'    + language.days + '</figcaption></figure>'
: '$1')
.replace(/\$1/, dhtml) + thtml;
}
$this.html(thtml);
} else if (method !== 'reset') {
// exists clock
$.extend(data, options);
}
$digits = $this.find('div');
if ($digits.length < data.vals.length) {
dif = data.vals.length - $digits.length;
vals = data.vals;
limits = data.limits;
data.vals = [];
data.limits = [];
for (i = 0; i < $digits.length; i += 1) {
data.vals[i] = vals[dif + i];
data.limits[i] = limits[dif + i];
}
data.iSec = data.vals.length - 1;
data.iHour = data.vals.length - 5;
}
data.sec = data.seconds;
$this.data(data);
if (method && methods[method]) {
methods[method].call($this, data.seconds);
} else if (data.start) {
methods.start.call($this, data.seconds);
} else {
init.call($this, data.seconds);
}
});
};
function init(sec, force) {
var data = this.data();
var $digits = this.find('ul');
var isInterval = false;
var days, rest, hours, minutes, secs, str, i, j, val;
if (!data.vals || $digits.length === 0) {
return;
}
if (!sec) {
sec = data.seconds;
}
if (data.intervalId) {
isInterval = true;
clearTimeout(data.intervalId);
}
days = Math.floor(sec / SECONDS_PER_DAY);
rest = days * SECONDS_PER_DAY;
hours = Math.floor((sec - rest) / SECONDS_PER_HOUR);
rest += hours * SECONDS_PER_HOUR;
minutes = Math.floor((sec - rest) / 60);
如何启用javascript功能
rest += minutes * 60;
secs = sec - rest;
str = (days < 100 ? '0' + (days < 10 ? '0' : '') : '')
+ days + (hours < 10 ? '0' : '') + hours + (minutes < 10 ? '0' : '')
+ minutes + (secs < 10 ? '0' : '') + secs;
for (i = data.vals.length - 1, j = str.length - 1; i >= 0; i -= 1, j -= 1) {
val = parseInt(str.substr(j, 1), 10);
data.vals[i] = val;
$digits.eq(i).children().html(val);
}
if (isInterval || force) {
data.intervalId = setTimeout(tick.bind(this), 1000);
this.data('intervalId', data.intervalId);
}
}
/**
* Switch specified digit by digit index
* @param {number} - digit index
*/
function tick(digit) {
var me = this;
var $digits = this.find('ul');
var data = this.data();
var n, $ul, $li, step, tickTimeout, timeDiff;
if (!data.vals || $digits.length === 0) {
if (data.intervalId) {
clearTimeout(data.intervalId);
this.data('intervalId', null);
}
if (data.callback) {
data.callback();
}
return;
}
if (typeof digit === 'undefined') {
digit = data.iSec;
}
this.data('tickCount', data.tickCount + 1);
n = data.vals[digit];
$ul = $digits.eq(digit);
$li = $ul.children();
step = untdown ? -1 : 1;
$li.eq(1).html(n);
n += step;

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