I am doing a program to perform tests, however I have to fulfil a requirement: that the teacher can determine the amount of questions that each test will have. Currently each exam consists of 10 questions but I have no idea what to do or what method to modify to meet this requirement. Any ideas?
Here are my methods for the creation of exams:
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
<style type="text/css">
#txt_question {
height: 184px;
width: 472px;
}
.answerBox {
width: 400px;
}
#btn_next0 {
margin-left: 11px;
}
</style>
</head>
<body style="height: 500px">
<form id="form1" runat="server">
<div>
Título del Examen:
<asp:TextBox ID="txt_title" runat="server"> </asp:TextBox><br />
<textarea id="txt_question"></textarea> <br />
<div id="here_radios">
<input id="rb_answer0" type="radio" name="answerBtn" value="0" class="answerBtn" /> <input id="txt_answer0" type="text" class="answerBox" /> <br />
<input id="rb_answer1" type="radio" name="answerBtn" value="1" class="answerBtn" /> <input id="txt_answer1" type="text" class="answerBox" /> <br />
<input id="rb_answer2" type="radio" name="answerBtn" value="2" class="answerBtn" /> <input id="txt_answer2" type="text" class="answerBox" /> <br />
</div>
<input id="btn_back" type="button" value="Pregunta Anterior" onclick="goBack()" />
<input id="btn_next" type="button" value="Siguiente Pregunta" onclick="saveJson()" /><input id="btn_cant" type="button" value="Cantidad preguntas" onclick="saveJson()" /><br />
<asp:Button ID="btn_finish" runat="server" Text="Terminar" OnClientClick="cstest()" OnClick="btn_finish_Click" />
</div>
<asp:HiddenField ID="hf_hook" runat="server" />
</form>
<%-- CLIENT CODE --%>
<script>
var exam = [];
var index = 0;
function saveJson() {
var data = {}
var gotAnswers = [];
var radios = here_radios.getElementsByClassName("answerBtn");
var boxes = here_radios.getElementsByClassName("answerBox");
data["pregunta"] = txt_question.value;
data["correcta"] = "0";
for (var i = 0; i < radios.length; i++) {
gotAnswers.push(boxes[i].value);
if (radios[i].checked) {
data["correcta"] = radios[i].value;
}
boxes[i].value = "";
}
data["respuestas"] = gotAnswers;
txt_question.value = "";
exam[index] = data;
index++;
if (typeof exam[index] !== 'undefined') {
populate(index);
}
}
function goBack() {
if (index > 0) {
index--;
populate(index);
}
}
function populate(index) {
var radios = here_radios.getElementsByClassName("answerBtn");
var boxes = here_radios.getElementsByClassName("answerBox");
txt_question.value = exam[index].pregunta;
for (var i = 0; i < exam[index].respuestas.length; i++) {
boxes[i].value = exam[index].respuestas[i];
radios[i].checked = (exam[index].correcta == i);
}
}
function cstest() {
saveJson();
var data = [];
exam.forEach(function(e) {
data.push(JSON.stringify(e));
});
hf_hook.value = data.join("▄");
}
</script>
</body>
</html>
Thank u so much for your help or ideas!
Related
i need to do six checkboxes for one image , and this image need to change if one or more checkboxes is cheked , how i can do it? please help me , i attach my code.
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
</head>
<body>
<img src="img/fotodiente/1.jpg" width="78" height="107" alt="1" id="diente1" onclick="changeImage1()"/>
<form name="form1" onsubmit="checkBoxValidation()">
<p><input type="checkbox" name="chbdiente1" value="1"/>Vestibular</p>
<p><input type="checkbox" name="chbdiente1" value="2"/>Mesial</p>
<p><input type="checkbox" name="chbdiente1" value="3"/>Oclusal</p>
<p><input type="checkbox" name="chbdiente1" value="4"/>Distal</p>
<p><input type="checkbox" name="chbdiente1" value="5"/>Palatino</p>
<p><input type="checkbox" name="chbdiente1" value="6"/>Lingual</p>
<p><input type="submit" value="submit"/>
</form>
<%String chbdiente1[] = request.getParameterValues("chbdiente1");
if (chbdiente1 != null) {%>
<script>
function changeImage1() {
var image = document.getElementById('diente1');
image.src = "img/fotodiente/1.1.jpg";
}
;
</script>
<ul><%for (int i = 0; i < chbdiente1.length; i++) {%>
<li><%=chbdiente1[i]%></li><%}%>
</ul><%}%>
</body>
</html>
i have this code and send me the value of selected checkboxes , but the image not change. help please. thanks
If you want to change the image after click of checkboxes you need to call changeImage1() into onchange or onclick method of checkbox.
Example:
<script>
$('document').ready(function(){
$('input[type="checkbox"]').click(function(){
changeImage1();
});
});
function changeImage1() {
var image = document.getElementById('diente1');
image.src = "img/fotodiente/1.1.jpg";
}
</script>
function changeImage1() {
var image = document.getElementById('diente1');
var checkboxes = document.getElementById("form1");
var cont = 0;
try {
for (var x = 0; x < checkboxes.length; x++) {
if (checkboxes[x].checked) {
cont = cont + 1;
}
}
} catch (e) {
}
try {
if (cont > 0) {
image.src = "img/fotodiente/1.1.jpg";
d1 = 2;
array.push("Pieza 1");
var chb2 = document.getElementsByName("form1");
} else if (cont === 0) {
image.src = "img/fotodiente/1.jpg";
d1 = 1;
array.splice(1, 1);
}
} catch (e) {
}
}
;
<img src="img/fotodiente/1.jpg" class="item_thumb" width="78" height="107" alt="1" id="diente1" onclick="changeImage1()"/>
<form id="form1" method="post" action="">
<input type="checkbox" id="chbdiente1" value="1" onclick="changeImage1();" /><label>Vestibular</label>
<input type="checkbox" id="chbdiente1" value="2" onclick="changeImage1();" /><label>Mesial</label>
<input type="checkbox" id="chbdiente1" value="3" onclick="changeImage1();" /><label>Oclusal</label>
<input type="checkbox" id="chbdiente1" value="4" onclick="changeImage1();" /><label>Distal</label>
<input type="checkbox" id="chbdiente1" value="5" onclick="changeImage1();" /><label>Palatino</label>
<input type="checkbox" id="chbdiente1" value="6" onclick="changeImage1();" /><label>Lingual</label>
<input type="button" name="Submit" value="Contar" hidden="">
</form>
Well, this changes the image when there are 1 or more checkboxes clicked, if all the checkboxes are unchecked the image returns to the first one.
I hope also I can help others and thanks
Hi I am trying to change the background style color of my div tag when the input matches one of the values in my list that I have, and when it doesn't, I want to create a div tag and append the missing value to the bottom of my list because it did not match.
I searched around and found this thread and used the same methods proposed, but no luck. Here is my attempt with my external js script:
function searchList()
{
var input = document.getElementById("search").value;
if ((input == "")||(input == null))
{
alert ('Error', 'values missing');
}
var childDivs = document.getElementById('courselist').getElementsByTagName('div');
for (i = 0; i < childDivs.length; i++)
{
var childDiv = childDivs[i];
if (input = childDiv)
{
document.getElementById("container").style.backgroundColor = yellow;
document.getElementById("courselist").style.backgroundColor = yellow;
}
else if (input != childDiv)
{
var div = document.createElement("div");
div.innerHTML = input;
document.courselist.appendChild(div);
}
}
}
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head><title> Work</title>
<style type="text/css">
fieldset {border:0px;}
#courselist {width:300px;}
#courselist div {border: 1px black solid;padding:10px;}
</style>
</head>
<body>
<div id="container">
<h2>Search a Course</h2>
<form action="" method="post" onsubmit="return searchList()">
<fieldset>
Enter the Course Name<br />
<input type="text" id="search" size="20" /><br />
<input type="submit" value="Search List" id="sub" />
<br /><br />
</fieldset>
</form>
<div id="courselist">
<div id="first"> </div>
<div> Machine Learning </div>
<div> Image Processing</div>
<div>Design and Analysis of Algorithms</div>
<div>Web Programming II </div>
<div>Advanced JAVA</div>
<div>Pattern Recognition</div>
</div>
</div>
<script type="text/javascript" src="main.js"></script>
</body>
</html>
What is correct way to change the style of a div with a function and to append a new div with javascript? Thanks in advance!
yellow should be a string and you need to find the correct element withing the page
function searchList()
{
var input = document.getElementById("search").value;
if ((input == "")||(input == null))
{
alert ('Error', 'values missing');
}
var childDivs = document.getElementById('courselist').getElementsByTagName('div');
for (i = 0; i < childDivs.length; i++)
{
var childDiv = childDivs[i];
if (input === childDiv)
{ if(input === 'Machine Learning'){
document.getElementById("#courselist").find('.machineLearning').style.backgroundColor = 'yellow';
}
}
else if (input != childDiv)
{
var div = document.createElement("div");
div.innerHTML = input;
document.courselist.appendChild(div);
}
}
}
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head><title> Work</title>
<style type="text/css">
fieldset {border:0px;}
#courselist {width:300px;}
#courselist div {border: 1px black solid;padding:10px;}
</style>
</head>
<body>
<div id="container">
<h2>Search a Course</h2>
<form action="" method="post" onsubmit="return searchList()">
<fieldset>
Enter the Course Name<br />
<input type="text" id="search" size="20" /><br />
<input type="submit" value="Search List" id="sub" />
<br /><br />
</fieldset>
</form>
<div id="courselist">
<div id="first"> </div>
<div class = 'machineLearning'> Machine Learning </div>
<div> Image Processing</div>
<div>Design and Analysis of Algorithms</div>
<div>Web Programming II </div>
<div>Advanced JAVA</div>
<div>Pattern Recognition</div>
</div>
</div>
<script type="text/javascript" src="main.js"></script>
</body>
</html>
Pass yellow as string, as there is no yellow variable holding value
Test the Element.textContent property, not the element itself or else result will always be false
Break the loop if value is found
Keep a variable to test value is found, else append the element
Use document.getElementById('courselist') instead of document.courselist to access the element
Use return false; in function to prevent form submission
function searchList() {
var input = document.getElementById("search").value;
if ((input == "") || (input == null)) {
return alert('Error', 'values missing');
}
var childDivs = document.getElementById('courselist').getElementsByTagName('div');
var found = false;
for (i = 0; i < childDivs.length; i++) {
var childDiv = childDivs[i];
if (input == childDiv.textContent) {
document.getElementById("container").style.backgroundColor = 'yellow';
document.getElementById("courselist").style.backgroundColor = 'yellow';
found = true;
break;
}
}
if (!found) {
document.getElementById("container").style.backgroundColor = '';
document.getElementById("courselist").style.backgroundColor = '';
//If you want to remove the `backgroundColor`
var div = document.createElement("div");
div.innerHTML = input;
document.getElementById('courselist').appendChild(div);
}
return false;
}
fieldset {
border: 0px;
}
#courselist {
width: 300px;
}
#courselist div {
border: 1px black solid;
padding: 10px;
}
<div id="container">
<h2>Search a Course</h2>
<form action="" method="post" onsubmit="return searchList()">
<fieldset>
Enter the Course Name
<br />
<input type="text" id="search" size="20" />
<br />
<input type="submit" value="Search List" id="sub" />
<br />
<br />
</fieldset>
</form>
<div id="courselist">
<div id="first"> </div>
<div>Machine Learning</div>
<div>Image Processing</div>
<div>Design and Analysis of Algorithms</div>
<div>Web Programming II</div>
<div>Advanced JAVA</div>
<div>Pattern Recognition</div>
</div>
</div>
When I click on back button of next page the check box value should not be reset.
It should be same as I checked or unchecked. The code from the first and next page is below.
First Page
<!DOCTYPE html>
<html>
<body>
<form>
<input type="checkbox" name="code" value="ECE">ECE<br>
<input type="checkbox" name="code" value="CSE">CSE<br>
<input type="checkbox" name="code" value="ISE">ISE<br>
<br>
<input type="button" onclick="dropFunction()" value="save">
<br><br>
<script>
function dropFunction() {
var branch = document.getElementsByName("code");
var out = "";
for (var i = 0; i < branch.length; i++) {
if (branch[i].checked == true) {
out = out + branch[i].value + " ";
window.location.href="next.html";
}
}
}
</script>
</form>
</body>
</html>
Next Page
<html>
<head>
<title>Welcome to </title>
</head>
<body color="yellow" text="blue">
<h1>welcome to page</h1>
<h2>here we go </h2>
<p> hello everybody<br></p>
</body>
<image src="D:\images.jpg" width="300" height="200"><br>
<button onclick="goBack()">Go Back</button>
<script>
function goBack() {
window.location.href="first.html";
}
</script>
</body>
</html>
Full solution: example. First add ids to your checkboxes:
<input type="checkbox" name="code" value="ECE" id='1'>ECE<br>
<input type="checkbox" name="code" value="CSE" id='2'>CSE<br>
<input type="checkbox" name="code" value="ISE" id='3'>ISE<br>
<input id="spy" style="visibility:hidden"/>
Then change your dropFunction:
function dropFunction() {
var branch = document.getElementsByName("code");
var out = "";
localStorage.clear();
for (var i = 0; i < branch.length; i++)
if (branch[i].checked == true)
localStorage.setItem(branch[i].id, true);
for (var i = 0; i < branch.length; i++) {
if (branch[i].checked == true) {
out = out + branch[i].value + " ";
window.location.href="next.html";
}
}
}
And add some new javascript code to first.html:
window.onload = function() {
var spy = document.getElementById("spy");
if(spy.value=='visited')
for(var i=1;i<=3;i++)
if(localStorage.getItem(i))
document.getElementById(i).checked=true;
spy.value = 'visited';
}
I know how to check and uncheck particular checkbox with ID and CLASS.
But I want to randomly select 10 checkbox using Jquery.
I will have 100,40 or XX number of checkbox everytime. (HTML Checkbox)
It might be 100 checkbox or 50 checkbox or something else. It will be different everytime.
I want to check 10 checkboxes randomly when a button is pressed.
User can manually select those 10 checkboxes. Or they can just press the random button.
I am using Jquery.
$(':checkbox:checked').length;
But i want to find the length of all the checkboxes and i want to check 10 random checkbox.
Are you looking for something like this?
http://jsfiddle.net/qXwD9/
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js" type="text/javascript"></script>
<script>
//Creating random numbers from an array
function getRandomArrayElements(arr, count) {
var randoms = [], clone = arr.slice(0);
for (var i = 0, index; i < count; ++i) {
index = Math.floor(Math.random() * clone.length);
randoms.push(clone[index]);
clone[index] = clone.pop();
}
return randoms;
}
//Dummy array
function createArray(c) {
var ar = [];
for (var i = 0; i < c; i++) {
ar.push(i);
}
return ar;
}
//check random checkboxes
function checkRandom(r, nodeList) {
for (var i = 0; i < r.length; i++) {
nodeList.get(r[i]).checked = true;
}
}
//console.log(getRandomArrayElements(a, 10));
$(function() {
var chkCount = 100;
//this can be changed
var numberOfChecked = 10;
//this can be changed
var docFrag = document.createElement("div");
for (var i = 0; i <= chkCount; i++) {
var chk = $("<input type='checkbox' />");
$(docFrag).append(chk);
}
$("#chkContainer").append(docFrag);
$("#btn").click(function(e) {
var chks = $('input[type=checkbox]');
chks.attr("checked", false);
var a = createArray(chkCount);
var r = getRandomArrayElements(a, numberOfChecked);
//console.log(r);
checkRandom(r, chks);
});
});
</script>
</head>
<body>
<div id="chkContainer"></div>
<div>
<input type="button" id="btn" value="click" />
</div>
</body>
How about this:
Working example: http://jsfiddle.net/MxGPR/23/
HTML:
<button>Press me</button>
<br/><br/>
<div class="checkboxes">
<input type="checkbox" />
<input type="checkbox" />
<input type="checkbox" />
<input type="checkbox" />
<input type="checkbox" />
<input type="checkbox" />
<input type="checkbox" />
<input type="checkbox" />
<input type="checkbox" />
<input type="checkbox" />
<input type="checkbox" />
<input type="checkbox" />
<input type="checkbox" />
<input type="checkbox" />
<input type="checkbox" />
<input type="checkbox" />
<input type="checkbox" />
<input type="checkbox" />
<input type="checkbox" />
<input type="checkbox" />
<input type="checkbox" />
<input type="checkbox" />
<input type="checkbox" />
<input type="checkbox" />
<input type="checkbox" />
<input type="checkbox" />
<input type="checkbox" />
<input type="checkbox" />
<input type="checkbox" />
<input type="checkbox" />
</div>
JAVASCRIPT (JQuery required):
$("button").click(function() {
// How many to be checked?
var must_check = 10;
// Count checkboxes
var checkboxes = $(".checkboxes input").size();
// Check random checkboxes until "must_check" limit reached
while ($(".checkboxes input:checked").size() < must_check) {
// Pick random checkbox
var random_checkbox = Math.floor(Math.random() * checkboxes) + 1;
// Check it
$(".checkboxes input:nth-child(" + random_checkbox + ")").prop("checked", true);
}
});
Hi here is the codes bellow, I've tried many things but I couldnt get value of selected radio button.As you can see I need to get that value for diffrent situations.
<div style="display: inline-block">
<div>
Log Out<span> Welcome </span>YS User 1 noName </div>
<br />
<br />
<br />
<br />
<input type="button" onclick="submitCreate();" value="New Survey" /><br />
<input type="button" onclick="submitEdit();" value="Edit Survey" /><br />
<input type="button" onclick="submitDelete();" value="Delete Survey" /><br />
<input type="button" onclick="submitPreview();" value="Preview Survey" />
</div>
<div style="display: inline-block">
<div>
<table class="MyTable"><thead><tr class="columnHead"><th scope="col"></th><th scope="col">CreatedBy</th><th scope="col">Created Date</th><th scope="col">Is Running</th></tr></thead><tbody><tr><td> <input name="selected" id="1"
type="radio" value="1" /></td><td>1</td><td>12/12/2011 3:43:57 PM</td><td>False</td></tr><tr class="altRow"><td> <input name="selected" id="2"
type="radio" value="2" /></td><td>1</td><td>12/13/2011 4:42:37 PM</td><td>False</td></tr><tr><td> <input name="selected" id="3"
type="radio" value="3" /></td><td>1</td><td>12/13/2011 6:27:38 PM</td><td>False</td></tr></tbody></table>
</div>
</div>
</body>
</html>
<script type="text/javascript">
// var value = $$('input[name=selected]:checked')[0].get('value');
// var selectFoo;
// $$('input[name=selected]').each(function (el) {
// if (el.checked == true) {
// selectFoo = el.value;
// }
// });
function getCheckedValue(radioObj) {
if (!radioObj)
return "";
var radioLength = radioObj.length;
if (radioLength == undefined)
if (radioObj.checked)
return radioObj.value;
else
return "";
for (var i = 0; i < radioLength; i++) {
if (radioObj[i].checked) {
return radioObj[i].value;
}
}
return "";
};
function submitCreate() {
var adress = "/User/CreateSurvey/";
document.location = adress;
};
function submitEdit() {
var adress = "/Den/Index/" + getCheckedValue('selected');
document.location = adress;
};
function submitDelete() {
var adress = "/User/DeleteSurvey/" + getCheckedValue('selected');
document.location = adress;
};
function submitPreview() {
var adress = "/User/PreviewSurvey/" + getCheckedValue('selected');
document.location = adress;
};
</script>
You can use document.getElementsByName(<button_name>) or document.getElementsByTagName("input") to get an array of input elements. Loop through those elements to check which is checked.
Here is an example of how to get the value of the checked button from a set of radio buttons with the name "selected":
<html>
<head>
<script type="text/javascript">
function get_radio_value() {
var inputs = document.getElementsByName("selected");
for (var i = 0; i < inputs.length; i++) {
if (inputs[i].checked) {
return inputs[i].value;
}
}
}
function onSubmit() {
var id = get_radio_value();
alert("selected input is: " + id);
}
</script>
</head>
<body>
<form onsubmit="onSubmit();">
<input name="selected" value="1" type="radio"/>1<br/>
<input name="selected" value="2" type="radio"/>2<br/>
<input name="selected" value="3" type="radio"/>3<br/>
<input type="submit" value="submit"/>
</form>
</body>
</html>
I choose let number of code for a required function. The one worked for me is given below from api.jquery.com. Hope this helps others.
HTML
<input type="radio" name="option" value="o1">option1</input>
<input type="radio" name="option" value="o2">option2</input>
JavaScript
var selectedOption = $("input:radio[name=option]:checked").val()
The variable selectedOption will contain the value of the selected radio button (i.e) o1 or o2