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JavaScript - Dynamically Creating Html 5 Canvas....
Evening all.
Here's a snippet: Code:
canvases[i] = document.createElement('canvas');
canvases[i].style.width = '3px';
canvases[i].style.height = '100%';
canvases[i].getContext("2D");
canvases[i].fillRect(1,0,1,table_height);
I'm trying to dynamically create a canvas element. Later in the script it gets attached to the DOM, and this works fine if the last two lines are missing. I end up with a canvas element that is 3px wide and 100% of the containing div tall. However, the last two lines make it crash, with the error report 'canvases[i].fillRect is not a function'. If I change the last two lines to Code: var drawing = canvases[i].getContext("2D");
drawing.fillRect(1,0,1,table_height);
it says 'drawing is null'. Something seems to be going wrong with the getContext bit, because setting the height and width work fine. Any ideas? It behaves the same if I append the canvas element to the DOM before trying to do the drawing as well. This is in FF4.0.1 with a xhtml1-strict.dtd doctype and valid html. Thanks, Chris Similar Tutorialsok so I am trying to create a function that creates an array comprised of filenames based on a given range. I.E if 2-8 is selected and a foldername of UMCP/ and a common name of college is also given, the function should return and array such as [UMCP/college2.jpg,UMCP/college3.jpg.....UMCP/college8.jpg]. Here is what I've got but the alert that should tell me the filename of the first image says it is undefined, how can i fix this? Code: function getArrayPhotosNames (total,count,first,last) {
/*window.alert("get Array Photo Names");*/
var folderName = document.getElementById("photofold").value;
var Alias = document.getElementById("commonName").value;
for (var i=0; i>=total; i+=1) {
var imageNum = i+first;
var filename = folderName + Alias + imageNum + ".jpg";
window.alert("image will be stored as"+filename);
photosArrayGlobal[i]= filename;
}
window.alert("the first photo is" +photosArrayGlobal[0]);
var countnum = count.value;
if (count === 0) {
window.alert("randomize time")
var randomArray = photosArrayGlobal.sort( randomize() );
var randomPhoto= document.getElementById("myImage");
randomPhoto.setAttribute("src", randomArray[photoIndexGlobal]);
}
else {
var firstPhoto=document.getElementById("myImage");
firstPhoto.setAttribute("src", photosArrayGlobal[photoIndexGlobal])
}
}
im trying to create a script for greasemonkey (tried getting help from their discussion forums, but no one ever answers), but its still written in javascript. so here is what im trying to do. Ive got a dynamically created division that aligns to the right of the browser window. Now im trying to put links inside it as you normally would with like a document.write statement or other methods. The only problem is, any method i try wont work for me. heres my code, maybe someone could give me some things i could try. Code: function QuickLinks()
{
var body = document.body;
var div2 = document.createElement("div");
div2.setAttribute('class','QL');
div2.setAttribute('style','background-color: #692510;width: 200px;height: 500px;top: 2cm;position: absolute;right: 5px;z-index: 4;');
var links = document.createTextNode("where i want my links"); //now with that statement it just writes text, ive tried document.write and many other methods and nothing seems to work.
div2.appendChild(links); //this just inserts the links into the div.
body.appendChild(document.createElement('br'));
body.appendChild(div2);
}
QuickLinks();
Forgive me, I come from a ColdFusion background and DOM manipulation is not one of my strongest assets. I am trying to dynamically create (and also delete) a row inside a table, which contains three cells that each have three form elements (a input box, a select drop-down box that is populated by a query to a database, and a textarea). Now all the JavaScript/jQuery examples I've seen for dynamically creating elements are very basic, nothing this complex. Could I get some help?! This is what I'm trying to dynamically create so that the user can add more options but also delete them. Would the jQuery clone() function be a good choice for this? Code: <tr> <td> <input type="text" id="rejectName" /> </td> <td> <select id="divSelectReason"> <option value="" selected="true">Enter Rejection Reason</option> <cfoutput query="queryReasonReturn"> <option>#codeAndReason#</option> </cfoutput> </select> </td> <td> <textarea id="editReason" cols="30"></textarea> </td> </tr> Now when a row is dynamically created I also have to access those values as well, so I would assume using a variable that counts each row created, and appends that iteration to the name of that particular element. Hello! Im having problem generating the labels for content created by the following function: Code:
function setOutput(){
if(httpObject.readyState == 4){
var answer = httpObject.resultsponseText.split(",");
var results = document.getElementById("resultsultadosScan1");
var article = document.createElement("div");
var weight = document.createElement("div");
var price = document.createElement("div");
article.className = "article";
weight.className = "weight";
price.className = "price";
document.getElementById('outputText0').value = httpObject.innerHTML= answer[0];
document.getElementById('outputText1').value = httpObject.innerHTML= answer[1];
document.getElementById('outputText2').value = httpObject.innerHTML= answer[2];
article.innerHTML = httpObject.innerHTML= answer[0];
weight.innerHTML = httpObject.innerHTML= answer[1];
price.innerHTML = httpObject.innerHTML= answer[2];
results.appendChild(article);
results.appendChild(weight);
results.appendChild(price);
}
}
A friend wrote this sample script to achieve generation of labels on my script, but I have been trying for hours with no luck, can someone take a look and tell me the correct usage of this script: Code:
function createLabel() {
var target = document.getElementById("target");
var label = document.createElement("label");
var text = document.createTextNode("Article");
label.appendChild(text);
target.appendChild(label);
}
Can you help me with the correct "combination" using my script above, a "real life" example? Thanks a lot! I have here a code that will automatically generate two text fields (Title & Price) when "Add another article" is pressed. I got this from the web, but I want instead of using a text field, I want it to create a drop down menu based on a mysql table, then update the price automatically (also based on the mysql table) on the other text field once a selection has been made on the drop down menu. Code: <link rel="stylesheet" type="text/css" media="screen" />
<style type="text/css"></style>
<script type="text/javascript">
var elCount = 2;
function add() {
var parent = document.getElementById('parent');
var article = document.createElement('DIV');
article.id = 'article_' + elCount;
article.name = 'article_' + elCount; // NEW LINE
var article_title_label = document.createElement('LABEL');
article_title_label.appendChild(document.createTextNode('Title ' + elCount + ': '));
var article_title_text = document.createElement('INPUT');
article_title_text.id = 'article_' + elCount + '_title';
article_title_text.name = 'article_' + elCount + '_title'; // NEW LINE
var article_textarea_label = document.createElement('LABEL');
article_textarea_label.appendChild(document.createTextNode('Price ' + elCount + ': '));
var article_textarea = document.createElement('INPUT');
article_textarea.id = 'article_' + elCount + '_price';
article_textarea.name = 'article_' + elCount + '_price'; // NEW LINE
article.appendChild(article_title_label);
article.appendChild(article_title_text);
article.appendChild(article_textarea_label);
article.appendChild(article_textarea);
parent.appendChild(article);
elCount++;
}
</script>
<body>
<div id="parent">
<div id="article_1">
<label for="article_1_title">Title 1: </label><input type="text" name="article_1_title" id="article_1_title" />
<label for="article_1_price">Price: </label><input type="text" name="article_1_price" id="article_1_price" />
</div>
</div>
any ideas? Thanks I have make a javascript program that uses HTML canvas and I can't get it to work in Internet Explorer. I tried using excanvas and jqcanvas but had trouble getting them to work. Does anyone know how to do this?
I need to loop the alphabet and numbers 0-9 to initialize a few thousand arrays. This is for my site and is truly needed. http://www.thefreemenu.com I currently have every array written out and it takes up to much space in my .js file. The majority of my variables are empty but necessary and need to be there (including empty) for my site to work properly. Question is the last part Here's where I'm at. Code: var NewVarLetterOrNum = "a";
eval("_oneofseveralnames_" + NewVarLetterOrNum + "='this part works';");
alert(_oneofseveralnames_a);
This creates the variable _oneofseveralnames_a='this part works' Code: var newArrayLetterOrNum = "a";
eval("_oneofseveralnames_" + newArrayLetterOrNum + "= new Array();");
alert(_oneofseveralnames_a)
This creates the Array _oneofseveralnames_a=new Array(); and all the values in the array are null, but, now a variable like _nl_a[1]='something' can be used elsewhere because the array exists. This is all that is necessary for now because I can probably set all the variables to be blank with something like Code: i=1
while(i<=20){
_oneofseveralnames_a[i]="1-20";
i++
}
alert(_oneofseveralnames_[20]);
So now you have what I came to understand in the first few hours. Now to the hard part : ( I can't make multiple array's dynamically. I dont' know if its because I don't understand loops or arrays or what and its very fustrating. As for any answer you might be so kind as to provide, if you could dumb it down that would be greatly appreciated. Code: var newArray =new Array('a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z')
i=1
while(i<=26){
eval("_nl_" + newArray[i] + "= new Array();");
i++
}
alert(newArray[1]) // Is b, but
alert(_nl_b) //I can't get _nl_b to exist, I tried everything including taking away the quotes around the letters in every test
*/
var _nl_a =new Array()
var _img_a =new Array()
var _h_a =new Array()
var _r_a =new Array()
var _m_a =new Array()
var _yt_a =new Array()
var _i_a =new Array()
The above arrays are all the array _name_ parts I need but for example, a has 10 parts, a,p2_a,p3_a,.. p10_a. I need 10 pages for each letter of the alphabet and numbers 0-9 and a special all1, p2_all1 ... p10_all1. Overall 2200 arrays that need to be declared. Currently they are all written out.
/*
Hey everyone, I currently have a grid of thumnails which when clicked will load an image at the top of the page without reloading the page using the following JS: Code: <a href="JavaScript:;" onClick="JavaScript:document.all.Main.src='images/image01.png';"><img src='images/image01thumb.png'></a> This works wonderfully, However, what I need to do now is to produce the same thing but instead of loading an image, load an html file into the page without reloading. Is there a way I could use a similarly simple solution? Thanks Hello, this is my first post. I've been looking for a script to render HTML code into an accurate PNG file. I found this kind of function at http://www.mecabricks.com/en/workshop/ - when pressing the camera button. And also http://html2canvas.hertzen.com/ - but the documentation is not enough so I just can't get it to work... I was wondering if anyone could help me to get it going? Kind regards, P hi this is santosh first off all thanks in advance to all who r reading my question im in prblm in my project in 1 file i have to first display textbox in html statically which will hav + & - button preceding it , & on click of + button one more textbox should appear dynamically & first textbox + button should disapper & it should hav only - button & the textbox which was dynamically generated now on click of first textbox + button should hav + & - button & it should go on. & on click of - button textbox which is in front of it should get deleted. here i tried alot but my code is showing + & - button to every textbox that is dynamically generated which is not the requirement plz help me im in great need. earlier also i hav submitted my queries & got a fully satisfied result bcoz of that now im having great hopes from u & this site plz reply as early as possible waiting for ur reply again thanks in advance I'm using a form data reference, something like P-1234 for example to create a text file and a link to the file. This is during the construction of a new table or table row with javascript. I have an array of one or more references submitted via form using $_POST. On my action page I am creating a txt file P-1234. If I am creating a table ot table row using createElement(), one of the cells will have a link to the file. If the file is created as follows: PHP Code: $File = $_POST['ref'][$i] . "txt"; After creating the cell Code: var Cell = document.createElement('td');
I assign the file to a variable var File = "<?= $File ?> "; I assume the link is inserted using innerHTML? If so, do I just append the filename to the end of the file path like this? Cell.innerHTML = "http://localhost/Project/+File"; If this is not the right way can someone point me in the right direction? Hi im wondering if someone could be of some help please, im a newbie to javascript and after some help and advice if possible please. Ive used a template from the web which was a quiz template. Im just trying to get my javascript script to work. I want it to populate my html question/advice box so people can input what there answer to the question and it will give them advice. It's for a data classification advice for a work project. I just dont know where im going wrong or what im missing out - ive read loads of help sections on the web and still cant get the javascript to populate my html boxes. Any help or advice would be really appreciated. Thanks Lee Heres my html code which seems to work ok... the box etc is displayed just doesnt have any content. ----------------------------------------------------------------------- Code: <form method="POST">
<div align="center"><center><table BORDER="1">
<tr>
<td COLSPAN="2" BGCOLOR="#4C0000"><div align="center"><center><p><font SIZE="+3"
COLOR="#FFFFFF">Data Classification </font></td>
</tr>
<tr>
<td COLSPAN="2" BGCOLOR="#4C0000"><div align="center"><center><p><font SIZE="-1"
COLOR="#FFFFFF">2010 <a HREF="Data Governance</font> </p>
</center></div><div align="center"><center><p><font COLOR="#FFFFFF">Click on "Next
Question" to start advice. Be sure to use small letters (no caps) when entering your
letter choice.</font> </td>
</tr>
<tr>
<td><b>Question #:</b></td>
<td ALIGN="LEFT"><input TYPE="TEXT" NAME="questNo" SIZE="4"></td>
</tr>
<tr>
<td><b>Question:</b></td>
<td><div align="center"><center><p><textarea COLS="70" ROWS="2" name="question"
wrap="virtual"></textarea></td>
</tr>
<tr>
<td ALIGN="RIGHT"><b>a)</b></td>
<td><div align="center"><center><p><input TYPE="TEXT" NAME="choiceA" SIZE="75"></td>
</tr>
<tr>
<td ALIGN="RIGHT"><b>b)</b></td>
<td><div align="center"><center><p><input TYPE="TEXT" NAME="choiceB" SIZE="75"></td>
</tr>
<tr>
<td ALIGN="RIGHT"><b>c)</b></td>
<td><div align="center"><center><p><input TYPE="TEXT" NAME="choiceC" SIZE="75"></td>
</tr>
<tr>
<td ALIGN="RIGHT"><b>d)</b></td>
<td><div align="center"><center><p><input TYPE="TEXT" NAME="choiceD" SIZE="75"></td>
</tr>
<tr>
<td ALIGN="RIGHT"><b>Your choice:</b></td>
<td><input TYPE="TEXT" NAME="yourChoice" SIZE="4"></td>
</tr>
<tr>
<td COLSPAN="2"><div align="center"><center><p><input TYPE="button"
VALUE="Check Current Advice" onClick="checkAnswer(this.form)"><input TYPE="button"
VALUE="Next Question" onClick="nextQuestion(this.form)"> <input TYPE="reset"
VALUE="Start Over" onClick="clearForm(this.form)"></td>
</tr>
<tr>
<td ALIGN="RIGHT"><b>Results:</b></td>
<td><div align="center"><center><p><textarea COLS="70" ROWS="3" name="Advice"
wrap="virtual"></textarea></td>
</tr>
<tr>
</form>
-------------------------------------------------------------------------- Now heres my javascript which i just cant seem to get to work or integrate with the html question/advice box. There will be some text in there that was originally part of the template that i was going to remove at a later stage once id got a better underatnding of where i was going wrong. Code: <html>
<head>
<script LANGUAGE="JavaScript">
<!-- hide this script tag's contents from old browsers --->
function jumpBox(list) {
location.href = list.options[list.selectedIndex].value
}
//Lee Quinn 2010 All Rights Reserved
function init()
{
questions = new Array()
questions[1] = "Is the information you are collecting or creating any of the following?"
questions[2] = "Is the information you are collecting or creating any of the following?"
questions[3] = "Is the information you are collecting or creating any of the following?"
questions[4] = "Is the information you are collecting or creating any of the following?"
answerA = new Array()
answerA[1] = "Marketing brochures, Customer disclosure statements,Published annual reports, Interviews with news media, Press releases"
answerA[2] = "Employee Handbook,Telephone Directory,Organization Charts,Policies and Standards,Training Manuals"
answerA[3] = "Customer records, Correspondence containing customer information, Credit card listings,Personnel records/Employee performance reviews,Unit business plans,Proprietary/custom software,Budget information,Internal audit reports,Business reports on strategy, exposures etc"
answerA[4] = "Strategic Plans,Encryption keys,Details of mergers or acquisitions,Financial results prior to publication,Online access codes such as passwords or pin"
answerB = new Array()
answerB[1] = "None of the above"
answerB[2] = "None of the above"
answerB[3] = "None of the above"
answerB[4] = "None of the above"
rightAns = new Array
rightAns[1] = "A"
rightAns[2] = "b"
rightAns[3] = "c"
rightAns[4] = "d"
reference = new Array()
reference[1] = "You have indicated yes to question 1, therefore the information you are collecting/creating will be classified as PUBLIC information. It is information that can be disclosed to anyone without violating an individual?s right to privacy. Knowledge of this information does not expose CFS to financial loss, embarrassment, or jeopardize the security of assets."
reference[2] = "You have indicated yes to question 2, therefore the information you are collecting/creating will be classified as INTERNAL USE information. It is information that, due to technical or business sensitivity, is limited to employees and contractors who work on-site. It is intended for use only within CFS. Unauthorized disclosure, compromise, or destruction would not have a significant impact on CFS or its employees."
reference[3] = "You have indicated yes to question 3, therefore the information you are collecting/creating will be classified as CONFIDENTIAL information. It is information that CFS and its employees have a legal, regulatory, or social obligation to protect. It is intended for use solely within defined groups in CFS. Unauthorized disclosure, compromise, or destruction would adversely impact CFS its customers or its employees.
Unless otherwise stated all data should be treated as CONFIDENTIAL.Sensitive data = Confidential or Highly Confidential data."
reference[4] = "You have indicated yes to question 4, therefore the information you are collecting/creating will be classified as HIGHLY CONFIDENTIAL information, It is the highest level of classification and is information whose unauthorized disclosure, compromise, or destruction could result in severe damage, provide significant advantage to a competitor, or incur serious financial impact to CFS or its employees. It is intended for restricted use by a very small number of people (possibly 0 or 1) with an explicit, predetermined need to know."
}
function nextQuestion(form)
//set the total number of questions equal to quizend
{ var quizEnd = eval(4 * 1);
if(form.questNo.value =5= quizEnd) {
form.question.value = "1";
form.choiceA.value = "Marketing brochures, Customer disclosure statements,Published annual reports, Interviews with news media, Press releases";
form.choiceB.value = "None of the above";
form.choiceC.value = "Unsure";
form.yourChoice.value = "a,b,c,d";
form.results.value = "End of Advice. Your final results are listed below."; } else {
if(form.questNo.value == "") {form.questNo.value = 1} else {
form.questNo.value = eval(form.questNo.value) + 1;
}
form.question.value = questions[form.questNo.value];
form.choiceA.value = answerA[form.questNo.value];
form.choiceB.value = answerB[form.questNo.value];
form.choiceC.value = answerC[form.questNo.value];
form.choiceD.value = answerD[form.questNo.value];
form.yourChoice.value = "";
form.results.value = "";
if(form.myScore.value == "") {form.myScore.value = 0; } else {
form.myScore.value = form.myScore.value; }
}
}
function checkcurrentadvice(form) {
var myScore = 0;
var curve = 0;
if(form.results.value != "") {form.results.value = "Sorry, no guessing allowed. In order to retry this question you will have to start the quiz over. Click on ''Next Question'' to continue."; }
else if(form.yourChoice.value == rightAns[form.questNo.value]) {
form.myScore.value = eval(form.myScore.value) + eval(1);
form.results.value = "Conratulations! You are correct. That brings your cumulative score to " + form.myScore.value + " out of a possible " + form.questNo.value + ". Click on ''Next Question'' to continue."; } else {
form.results.value = "Sorry, you are incorrect. Please refer to " + reference[form.questNo.value] + " before retaking the quiz. This brings your cumulative score to " + form.myScore.value + " out of a possible " + form.questNo.value + ". Click on ''Next Question'' to continue." }
function clearForm(form)
{
form.questNo.value = "";
form.question.value = "";
form.choiceA.value = "";
form.choiceB.value = "";
form.choiceC.value = "";
form.choiceD.value = "";
form.yourChoice.value = "";
form.results.value = "";
form.myScore.value = "";
form.percent.value = "";
form.grade.value = "";
}
</script>
</head>
</html>
Hi, I wanna make a form that receives: textbox URL And textbox Anchor and result will be two anchors one <a href, and one phpBB Example: Url: www.pushpin.co.il Anchor: pushpin Results: <a href="http://www.pushpin.co.il">pushpin</a> [ url = http://www.pushpin.co.il/ ] pushpin[ /url ] Help? I am trying to remove all Javascript code from my HTML doc and put into external .js file(s). I have event triggers that I would like to move to an external file, but I am not sure how. Below is an example. [CODE] <a href="residential.html" class="textdeco" > <img class="img-menu" id="res" src="images/buttons/btn_res_mouse_out.jpg" alt="Residential" onmouseover="FP_swapImg(1,0,/*id*/'res',/*url*/'images/buttons/btn_res_mouse_over.jpg')" onmouseout="FP_swapImg(0,0,/*id*/'res',/*url*/'images/buttons/btn_res_mouse_out.jpg')" onmousedown="FP_swapImg(1,0,/*id*/'res',/*url*/'images/buttons/btn_res_mouse_down.jpg')" onmouseup="FP_swapImg(0,0,/*id*/'res',/*url*/'images/buttons/btn_res_mouse_up.jpg')" /> [CODE] The reason I want to do this is that this code is repeated in all pages and I want to reduce potential maintenance issues. Any help will be appreciated. I am trying to create a simple HTML table with the squares of numbers and for some reason the loop is not triggering. Code: Code: <table border="1">
<tr><td><h2>Table of Squares</h2></td></tr>
<tr><td>
Number
</td>
<td>
Square
</td></tr>
<tr>
<script language="JavaScript">
for(i = 1, fact = 1; i < 10; i++, fact = i*i) {
document.write("<td>" + i + " </td><td> " + fact + "</td>);
document.write("</tr><tr>");
}
document.write("</tr></table>");
</script>
When I run the page all that comes up is the start of the table that is written before the script executes. Also is there any way I could use a debugger to catch this on my own? I tried the firefox debugger but it didn't catch anything when I ran it through, maybe I was just doing it wrong. Any help is appreciated thanks! Hi, I am creating a HTML page and mailing it to the user(client side). This html page contains a Table and a button. On button click, I would like to create another HTML page based on the detail in the table,dynamically on run time and Open the newly created HTML. I need to use javascript to achieve this functionality. I have no Server-Client Configuration. And I need to run the Javscript only on client side to process the First HTML's table data and Create a new HTML page. The output of the javascript should also be put in a table format in the newly created HTML page. Here is some background information: The details from one server would be put into this first HTML along with a button. This HTML page is then mailed to Client side. The javascript in the HTML page then processes the Table data of first HTML. This can only be run at Client Side,once the user clicks the button and moreover I dont have Server-Client Configuration. I am creating a report and mailing it, For formatting purposes and for creating hyperlink to mailid's I chose HTML, Now I am struck here. Could some one please help me out with this. Thanks for your time. I've been reading a lot of tutorials on the canvas tag and seen a lot of people using JavaScript that looks something like: ctx.beginPath(); ctx.moveTo(25,25); ctx.lineTo(105,25); ctx.fill(); I understand that ctx is just the variable name and I can replace that with any variable I define, however, I'm looking for a list of all of the methods such as (moveTo, lineTo, fill etc...), as well as what they do. I hope I'm explaining this or asking this correctly. Thanks! -Mike Hi there! How should I write this - better than it's now - so that when I rotate a figure, in the next "frame" it would stay rotated? Second thing - if you run this code, and set the angle for, let's say 180 degrees the figure is being drawn in some random location. How do I fix this? Code: Code:
function GenericFigure(context) {
this.states = ["wait", "moving", "rotating", "stop"];
this.state = this.states[0];
this.ctx = context;
this.sqrW = this.sqrH = 20;
this.ctxW = 200;
this.ctxH = 350;
this.colorsO = {
red : "#ee1515",
green : "#45d137",
blue : "#17a3f3",
orange : "#ff910f",
purple : "#680077"
};
this.colorsA = ["#ee1515", "#45d137", "#17a3f3", "#ff910f", "#680077"];
this.pickColor = function() {
var num = Math.floor(Math.random() * 5);
return this.colorsA[num];
}
}
function Rectangle(context) {
this.inheritFrom = GenericFigure;
this.inheritFrom(context);
this.width = this.sqrW;
this.height = this.sqrH * 3;
this.x = this.ctxW / 2;
this.y = 0;
this.rotation = -1;
this.setRotation = function(angle) {
this.rotation = angle;
}
this.rotate = function() {
this.ctx.clearRect(0, 0, this.ctxW, this.ctxH);
this.ctx.translate(this.x + 2 * this.width, this.y - 2 * this.height + 20);
this.ctx.rotate(this.rotation * Math.PI / 180);
this.ctx.fillRect(this.ctxW / 2, 0, this.width, this.height);
this.ctx.restore();
}
this.moveDown = function() {
this.y += 20;
this.ctx.restore();
this.ctx.clearRect(0, 0, this.ctxW, this.ctxH);
this.ctx.fillRect(this.x, this.y, this.width, this.height);
this.ctx.save();
if(this.rotation > -1) {
this.rotate();
}
l("A");
}
this.draw = function() {
this.ctx.fillStyle = this.pickColor();
this.ctx.save();
this.ctx.fillRect(this.x, this.y, this.width, this.height);
}
}
//a tak można wywołać:
var ctx = document.getElementById("game").getContext("2d");
var rect = new Rectangle(ctx);
rect.draw();
var inte = setInterval(function(){if(rect.y >= rect.ctxH - rect.height){clearInterval(inte);return;}if(rect.y == 60) rect.setRotation(90);rect.moveDown();}, 500);
And the third problem: Code: this.ctx.translate(this.x, 0); I thought, that this line should set orientation point to top left corner of my figure, but it seems, that it doesn't - after rotation my figure is being drawn two heights lower. Again - how do I fix it? Any help will be much appreciated . Hey everyone, I have been practicing using canvas to make designs. My current code below will load the word the user inputs and makes it bounce around the canvas as well as a text spinner. However, whenever the user inputs a second word, the bounce below stops to start a new one and the text spinner messes up. I was wondering if anyone could help me so when the user inputs another word, that it either reloads a new textspinner or adds another one, as well as just add the word to the canvas without stopped the old one. Here's my current script. Thanks already, Joey Code:
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<script>
var ctx;
var a=0.0;
var as=true;//true a is increasing, false decreasing
var x,y;
var xs = 1;
var ys = 1;
var userWord
var myDiv, t;
var test = 0;
var ds ="";//display string
var sli =0; //spinning letter index;
function init(){
ctx = document.getElementById("myCvs").getContext("2d");
userWord = document.getElementById("userWord").value;
x=Math.floor(Math.random()*801)
y=Math.floor(Math.random()*601);
drawText();
setInterval("onEnterFrame()", 50);
myDiv = document.getElementById("myDiv");
for (i =0; i<=userWord.length;i++){
ds += "*";
}
myDiv.innerHTML =ds;
textSpin();
}
function textSpin(){
myChar = randomChar();
var newString = userWord.slice(0, sli);
newString +=myChar;
newString += ds.slice(sli+1, ds.length-1);
myDiv.innerHTML = newString;
if (myChar == userWord.charAt(sli)){sli++;}
if (sli<userWord.length){
t = setTimeout("textSpin()", 80);
}
}
function randomChar(){
var rc = Math.random()*26 + 97; //random lowercase char code
return String.fromCharCode(rc);
}
function onEnterFrame(){
if(a>1){as = false;}
if(a<0){as = true;}
if(as){
a+=0.01;
}else{
a-=0.01;
}
if(x>800){xs = -1}
if(x<0){xs=1}
if(y>600){ys = -1}
if(y<0){ys=1}
x+=10 *xs;
y+=10 *ys;
drawText();
}
function drawText(){
ctx.font = "20px Times New Roman";
//ctx.fillStyle= "rgb(256,256,256)";
//ctx.fillText("Hello", x, y);
ctx.fillStyle = randomColor();
ctx.fillText(userWord, x,y);
}
function randomColor(){
var r = Math.floor(Math.random()*150)+55;
var g = Math.floor(Math.random()*256)+150;
var b = Math.floor(Math.random()*20)+50;
var a = Math.random();
return "rgba("+ r+ ","+g+","+b+","+ a+")";
}
//function randomFont(){
// var s = Math.floor(Math.random()*100) +100;
// return s; //+ "px Times New Roman";}
</script>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<style type="text/css">
body {
background-color:#000;
}
#myDiv {
color:#FFF;
}
</style>
</head>
<body onLoad=""><center>
<input type="text" id="userWord" value=""> </input><br>
<input type="button" id="enterWord" value="Enter Word" onClick="init()" ></input><br><br>
<div id="myDiv" > </div>
<canvas id="myCvs" width="800px" height="600px" /><br>
<br>
</center>
</body>
</html>
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