Hi,
Thanks it is interesting how you combined the two functions getSettings() and getStudents(). But I do need radio buttons because I would like to output a combination of levels. Here is my full code,
HTML
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>pdf generater</title>
<script src="jspdf.js"></script>
<script src="libs/FileSaver.js/FileSaver.min.js"></script>
<script src="jsScriptQuads.js"></script>
</head>
<body>
<!-- <h1>Generate quadratic expressions</h1> -->
<div>
Names: <input id="students" type="text" placeholder="Fred Sarah John Anna"> (optional)<br>
(Place comma or space between names)
<br><br>
<table>
<tr id="easyRow">
<td align="right">Easy:</td><td><input onclick="addEz();" type="checkbox" id="easy"></td>
</tr>
<tr id="modRow">
<td align="right">Moderate:</td><td><input onclick="addMod();" type="checkbox" id="moderate"></td>
</tr>
<tr id="hardRow">
<td align="right">Hard:</td><td><input onclick="addHard();" type="checkbox" id="hard"></td>
</tr>
</table>
</div>
<div>
<br><button onclick="simplepdf();">Generate pdf</button> of quadratic expressions.
</div>
</body>
</html>
The script
//generating quadratic equations
//console.log("quadratic");
arr = [];
var range;
var fact = function(range){
var arr = [];
//generates a random integer in the range 1 to 'range'
var a = Math.floor(Math.random()*(range)+1);
//console.log("a = " + a);
var j = 1;
//generates a rand number in the range 1 to a
// var num = Math.floor(Math.random()*(a)+1);
for(var i=1; i<=a; i++){
if(a%i===0){
arr[j] = i;
// console.log("arr[" + j + "]=" + arr[j]);
j++;
}
}
//console.log("arr.length=" + arr.length);
for(var i=1; i<arr.length; i++){
//console.log(arr[i]);
}
pair = [];
var index = Math.floor(Math.random()*(arr.length-1)+1);
//console.log("arr.length = " + arr.length);
pair[0] = arr[index];
//console.log("pair[" + 0 + "] = " + pair[0]);
pair[1] = a/arr[index];
//console.log("pair[" + 1 + "] = " + pair[1]);
return pair;
}//end of fact() function
var quads = function(aRange,bRange){
var bool = function(){
plusminus = Math.floor(Math.random()*2);
if(plusminus == 0){
plusminus = -1;
}
// console.log("plusminus=" + plusminus);
return plusminus;
}//end of bool function
aFactor = fact(aRange);
a1 = bool()*aFactor[0];
a2 = bool()*aFactor[1];
cFactor = fact(bRange);
c1 = bool()*cFactor[0];
c2 = bool()*cFactor[1];
//console.log("a1=" + a1 + ", a2=" + a2 + ", c1=" + c1 + ", c2=" + c2);
num1 = a1*a2;
if(num1 == 1){
num1 = "";
}else if(num1 == -1){
num1 = "-";
}
num3 = c1*c2;
if(num3 > 0){
num3 = "+" + num3;
}else if(num3 < 0){
num3 = "" + num3;
}
num2 = a1*c2 + a2*c1;
if(num2 > 0 || num2 ==0){
num2 = "+" + num2;
}else if(num2 < 0){
num2 = "" + num2;
}
if(a1 == 1){
a1 = "";
}
if(a1 == -1){
a1 = "-";
}
if(c1 > 0){
c1 = "+" + c1;
}
if(a2 == 1){
a2 = "";
}
if(a2 == -1){
a2 = "-";
}
if(c2 > 0){
c2 = "+" + c2;
}
//console.log("a1=" + a1);
problem = num1 + "x^2" + num2 + "x" + num3;
solution = "(" + a1 + "x" + c1 + ")(" + a2 + "x" + c2 + ")";
//console.log("problem: " + problem + ", solution: " + solution);
return [problem, solution];
}//end of quads function
function addEz(){
var row = document.getElementById("easyRow");
var cell = document.createElement("td");
var text = document.createTextNode("Number of questions: ");
cell.appendChild(text);
row.appendChild(cell);
var cell = document.createElement("td");
var detail = document.createElement("input");
detail.setAttribute("id", "numEasy");
detail.value = "10";
detail.type = "number";
cell.appendChild(detail);
row.appendChild(cell);
}
function addMod(){
var row = document.getElementById("modRow");
var cell = document.createElement("td");
var text = document.createTextNode("Number of questions: ");
cell.appendChild(text);
row.appendChild(cell);
var cell = document.createElement("td");
var detail = document.createElement("input");
detail.setAttribute("id", "numModerate");
detail.value = "10";
detail.type = "number";
cell.appendChild(detail);
row.appendChild(cell);
}
function addHard(){
var row = document.getElementById("hardRow");
var cell = document.createElement("td");
var text = document.createTextNode("Number of questions: ");
cell.appendChild(text);
row.appendChild(cell);
var cell = document.createElement("td");
var detail = document.createElement("input");
detail.setAttribute("id", "numHard");
detail.value = "10";
detail.type = "number";
cell.appendChild(detail);
row.appendChild(cell);
}
function simplepdf(){//////////////////////////////////................
// console.log("beginning of simplepdf function");
function getStudents(){ // get the student string from the text input and changes it to an array students[]
var val = document.getElementById("students").value;
//issue still exists if more than one consecutive space is used
var index = val.indexOf(",");//check if there is a comma in string
//console.log("index " + index);
if(index == -1){//no comma in string so split on a space
students = val.split(" "); // splits the string into elements in an array
}else{
students = val.split(","); // splits the string into elements in an array
}
}
function getSettings(){
easyCheck = document.getElementById("easy").checked;
// console.log("Easy checkbox value: " + easyCheck);
if(easyCheck){
easyNum = document.getElementById("numEasy").value;
// console.log("Number of easy: " + easyNum);
}
moderateCheck = document.getElementById("moderate").checked;
// console.log("Moderate checkbox value: " + moderateCheck);
if(moderateCheck){
moderateNum = document.getElementById("numModerate").value;
// console.log("Number of moderate: " + moderateNum);
}
hardCheck = document.getElementById("hard").checked;
// console.log("Hard checkbox value: " + hardCheck);
if(easyCheck){
hardNum = document.getElementById("numHard").value;
// console.log("Number of hard: " + hardNum);
}
if(!easyCheck && !moderateCheck && !hardCheck){
alert("Please choose a level of difficulty");
exit();
}
}
getStudents();
getSettings();
for(var k=0; k < students.length; k++){
probs = [];
sols = [];
easyNum = parseInt(easyNum);
moderateNum = parseInt(moderateNum);
hardNum = parseInt(hardNum);
total = easyNum + moderateNum + hardNum;
for(var i=0; i < total; i++){
if(i < easyNum){//number of easy questions easyNum
aRange = 5;
bRange = 5;
}else if((i > (easyNum - 1)) && (i < (easyNum + moderateNum))){//number of moderate questions moderateNum
aRange = 12;
bRange = 12;
}else{//number of difficult questions hardNum
aRange = 24;
bRange = 24;
}
//call quads() which returns an array with two elements one for prob and one for solution
retArray = quads(aRange,bRange);
var probLength = probs.push(retArray[0]);
var solLength = sols.push(retArray[1]);
}//end of for loop
var line = 10;
page = 0;
var doc = new jsPDF();
if(line==10){
doc.text(20,line,students[k].toUpperCase() + " " + 'line: ' + line + ', Task: factorise the following expressions');
line+=10;
}
if(easyCheck){
doc.text(20,line,'Easy, line: ' + line);
line+=10;
for(var i = 0; i < easyNum; i++){
// doc.text(20,line,'line: ' + line + ', i: ' + i);
doc.text(30,line, (i+1) + ". " + probs[i]);
line+=10;
if(line==270){
doc.text(20,line,'page ' + (page+1));
doc.addPage();
line=10;
doc.text(20,line,students[k].toUpperCase() + " " + 'line: ' + line + ', Task: factorise the following expressions');
line+=10;
}
}
}
if(moderateCheck){
doc.text(20,line,'Moderate, line: ' + line);
line+=10;
if(!easyCheck){
easyNum = 0;
}
for(var i = easyNum; i < moderateNum + easyNum; i++){
// doc.text(20,line,'line: ' + line + ', i: ' + i);
doc.text(30,line, (i+1) + ". " + probs[i]);
line+=10;
if(line==270){
doc.text(20,line,'page ' + (page+1));
doc.addPage();
line=10;
doc.text(20,line,students[k].toUpperCase() + " " + 'line: ' + line + ', Task: factorise the following expressions');
line+=10;
}
}
}
if(hardCheck){
doc.text(20,line,'Hard, line: ' + line);
line+=10;
if(!moderateCheck){
moderateNum = 0;
}
for(var i = moderateNum; i < hardNum + moderateNum; i++){
// doc.text(20,line,'line: ' + line + ', i: ' + i);
doc.text(30,line, (i+1) + ". " + probs[i]);
line+=10;
if(line==270){
doc.text(20,line,'page ' + (page+1));
page++;
doc.addPage();
line=10;
doc.text(20,line,students[k].toUpperCase() + " " + 'line: ' + line + ', Task: factorise the following expressions');
line+=10;
}
}
}
doc.save(students[k] + 'ProblemSheet.pdf');
var doc = new jsPDF();
doc.text(20,10,students[k].toUpperCase() + ', Solution sheet: quadratic expressions');
for(var i=0; i < total; i++){
doc.text(20,2*10+(i*10),(i+1) + ". " + probs[i] + " = " + sols[i]);
}
doc.text(20,270,"NO GRADE WILL BE GIVEN IF YOU ANSWER THE WRONG PROBLEMS");
doc.save(students[k] + 'SolutionSheet.pdf');
}//end of the students[] for loop
}
This does use the jsPDF library to generate the pdf’s.
I haven’t fixed the solution sheets so that they create new pages within the file. That’s one of the many things on my todo list here.
Another issue is that if more that one space is placed between names the second space is considered an a name and so a whole new set of files is created for it.
Thanks,