Can't wrrite Text on a Div, on a Canvas - javascript

Im trying to write text on a div that comes from this code:
var resume = document.createElement("div");
resume.style.position = "fixed";
resume.style.height = 0.1*canvas.height + "px";
resume.style.width = 0.4*canvas.width + "px";
resume.style.bottom = 0.75*canvas.height + "px";
resume.style.left = 0.3*canvas.width + "px";
resume.style.backgroundColor = "Black";
resume.style.opacity = "0.8";
resume.textAlign = "center";
resume.color = "White";
resume.p = "efege";
document.body.appendChild(resume);
and is situated on this canvas
var canvas = document.getElementById("Canvy");
var b = canvas.getContext("2d");
b.canvas.width = window.innerWidth;
b.canvas.height = window.innerHeight;
document.body.appendChild(canvas);
why isn't my text showing up?
How would I get text to appear using resume.(some command here)?

I Figured Out I just needed to create another element and appendChild it to the Div.
In case anyone wanted to know.
Heres the code
var x = document.createElement("SPAN");
resume.appendChild(x);
x.textContent = "anytext";

Related

Onclick event in c# using javascript archor tag

I make a pop up form using java script and i'm kinda new in java script .
The pop up form has TextBox and a anchor .
Now my question is how can i call the on click event of the button and also get the button using c# code.
<script type="text/javascript">
function showBox() {
var width = document.documentElement.clientWidth + document.documentElement.scrollLeft;
var layer = document.createElement('div');
layer.style.zIndex = 2;
layer.id = 'layer';
layer.style.position = 'absolute';
layer.style.top = '0px';
layer.style.left = '0px';
layer.style.height = document.documentElement.scrollHeight + 'px';
layer.style.width = width + 'px';
layer.style.backgroundColor = 'black';
layer.style.opacity = '.6';
layer.style.filter += ("progid:DXImageTransform.Microsoft.Alpha(opacity=60)");
document.body.appendChild(layer);
var div = document.createElement('div');
div.style.zIndex = 3;
div.id = 'box';
div.style.position = (navigator.userAgent.indexOf('MSIE 6') > -1) ? 'absolute' : 'fixed';
div.style.top = '200px';
div.style.left = (width / 2) - (400 / 2) + 'px';
div.style.height = '100px';
div.style.width = '400px';
div.style.backgroundColor = 'white';
div.style.border = '2px solid silver';
div.style.padding = '20px';
document.body.appendChild(div);
var p = document.createElement('p');
p.innerHTML = 'Input BFG';
div.appendChild(p);
var b = document.createElement("INPUT")
b.placeholder = "BFG";
div.appendChild(b);
var a = document.createElement('a');
a.innerHTML = 'Close window';
a.href = 'javascript:void(0)';
a.id = "btnSave"
a.onclick = function () {
document.getElementById(a)
document.body.removeChild(document.getElementById('layer'));
document.body.removeChild(document.getElementById('box'));
};
div.appendChild(a);
}
</script>
Note: i don't have the html part of the popup form its created only using java script.
any help would be truly appreciated

Bullet Point not moving, only the image is

I need to animate the points in a bullet list, the bullet list is a div that contains bullet points that are divs.
A bullet point div contains an image and another div which has the bullet point text, the problem is when I try and move a given bullet point div only the image is moved.
I have tried various changes to the .style.position to no avail.
I could not create an account on jsfiddle.net so the following is a working example that moves only the first bullet point:
<html>
<head>
<title>Build Bullets</title>
<body>
<script>
window.setTimeout('initBuildBullets()',100);
function initBuildBullets(){
var bulletPointsDiv = document.createElement('div');
var bName = 'BulletList';
bulletPointsDiv.style.visibility='visible';
bulletPointsDiv.style.position = 'fixed';
bulletPointsDiv.style.display = 'block';
bulletPointsDiv.style.textAlign = 'left';
bulletPointsDiv.id = bName;
document.body.appendChild(bulletPointsDiv);
var bullet_src = 'bullet_level_1.gif';
var bulletText=[];
bulletText[0]='Bullet Point 1';
bulletText[1]='Bullet Point 2';
bulletText[2]='Bullet Point 3';
var x=100;
var y=100;
var h=100;
var w=200;
var lastBot = 0;
var indent = 0;
var imgW = 25;
var hOffset = 5;
for(var i=0;i<bulletText.length;i++){
var bp_id = bName + '_Bullet_Point_' + i;
var bulletPointDiv = document.createElement('div');
bulletPointDiv.id = bp_id;
bulletPointDiv.style.overflow = 'hidden';
bulletPointDiv.style.visibility='visible';
bulletPointDiv.style.position = 'inherit';
bulletPointDiv.style.display = 'inherit';
bulletPointDiv.style.textAlign = 'left';
bulletPointDiv.style.top = (y + lastBot) + 'px';
bulletPointDiv.style.left = (x + indent) + 'px';
var bulletImage = document.createElement('img');
bulletImage.src = bullet_src;
bulletImage.id = bName + '_Bullet_Image_' + i;
var bulletFieldDiv = document.createElement('div');
bulletFieldDiv.id = bName + '_Bullet_Field_' + i;
bulletFieldDiv.style.overflow = 'hidden';
bulletFieldDiv.style.position = 'inherit';
bulletFieldDiv.style.display = 'inherit';
bulletFieldDiv.style.textAlign = 'left';
bulletFieldDiv.style.top = (y + lastBot) + 'px';
bulletFieldDiv.style.left = (x + imgW + indent) + 'px';
bulletFieldDiv.style.width = (w - (imgW + indent)) + 'px';
bulletFieldDiv.innerHTML = bulletText[i];
bulletFieldDiv.style.visibility='visible';
bulletPointDiv.appendChild(bulletImage);
bulletPointDiv.appendChild(bulletFieldDiv);
bulletPointsDiv.appendChild(bulletPointDiv);
lastBot += bulletFieldDiv.offsetHeight + hOffset;
}
window.setTimeout('moveBullets()',100);
}
function moveBullets(){
var bp_id = 'BulletList_Bullet_Point_0';
bulletPointDiv = document.getElementById(bp_id);
bulletPointDiv.style.top = '0px';
bulletPointDiv.style.left = '0px';
}
</script>
</body>
</html>
If I could ask that you copy/paste to test.
The following image is the bullet_level_1.gif
I need to set the style.position to 'relative' and then the top and left needs to account for the image (ONLY), once I do that then all objects within the div will move with the div, e.g.:
...
var bulletImage = document.createElement('img');
bulletImage.src = bullet_src;
var imgW = bulletImage.width + 8;
var bulletFieldDiv = document.createElement('div');
bulletFieldDiv.style.position = 'relative';
bulletFieldDiv.style.top = '-' + (bulletImage.height + 8) + 'px';
bulletFieldDiv.style.left = imgW + 'px';
...
That said, I'm not sure why I need the additional 8px for both the height and width??

Turning off opacity on centered div

I am writing a box that appears in the center of a website. To do that I dynamically (js) create two elements - overlay that covers whole page and has 0.5 opacity to show some website, and a box that should have no opacity.
The problem is that both the overlay and the box are a bit transparent.
this.createOverlay = function () {
handler = document.createElement('div');
handler.style.display = 'hidden';
handler.style.width = '100%';
handler.style.height = '100%';
handler.style.top = 0;
handler.style.left = 0;
handler.style.position = 'absolute';
handler.style.background = 'black';
handler.style.color = "#aaaaaa";
handler.style.opacity = "0.5";
handler.style.filter = "alpha(opacity = 5)";
return this;
};
this.createCenteredBox = function (width, height, url) {
var data = JSON.parse(data);
handler = document.createElement('a');
handler.href = data.product_feed_deep_link;
handler.target = "_blank";
handler.style.display = "block";
handler.style.width = width + "px";
handler.style.height = height + "px";
handler.style.position = "absolute";
handler.style.color = "black";
handler.style.backgroundColor = "#ffffff";
handler.style.opacity = "1";
handler.style.top = "50%";
handler.style.left = "50%";
handler.style.marginTop = "-" + height / 2 + "px";
handler.style.marginLeft = "-" + width / 2 + "px";
handler.style.padding = "0 10px 10px 10px";
handler.style.borderRadius = "4px";
var div = document.createElement('div');
handler.appendChild(div);
return this;
};
This is the code, I can't turn off box'es opacity no matter if I set opacity to 1 on it, or opacity filter, or whatever.
How can I solve this?
Opacity isn't inherited (see here), however, all elements that reside inside (descendants) of that elements that the opacity property is applied to will be effected.
The best way to get around this is to use rgba.
handler.style.background = "rgba(0, 0, 0, .5)"; // RGB 0,0,0 is #000 (black).
//handler.style.opacity = "0.5";
//handler.style.filter = "alpha(opacity = 5)";
See 2nd and 3rd answer here as well

Remove div's with almost the same id once a certain top value is reached

So I've got this code to create a rectangular div every 800ms which falls down the screen.
Now I'd like to be able to remove a div once it reaches a certain top value, otherwise it'll
get too cluttered with div's. Now I have no idea how to exactly do that, considering the id's I've given them. I'd also like to know how I could end up removing every single one of those div's once it's game over. This is what I have so far all together: http://student.howest.be/pieter-jan.vandenb1/crossdodger/Game.html. I'm pretty new at javascript so thanks in advance!
var idNumber = 0;
SpawnBlock();
function SpawnBlock()
{
UpdateBlock();
setTimeout(SpawnBlock, 800);
}
function UpdateBlock()
{
var block = document.createElement("div");
block.style.width = "25px";
block.style.height = "25px";
block.style.background = "lightgrey"
block.style.top = "-25px";
block.style.left = Math.random() * 455 + "px";
block.style.position = "absolute";
block.id = "block" + ++idNumber;
//block.speed = 0.5;
sym.$("Stage").append(block);
sym.$("#block"+idNumber).transition({top:"800px"},8000,"linear");
}
It's made in Adobe Edge, hence the "sym." namespace.
This worked for me in a similar environment:
var bl = document.getElementById("block" + (idNumber));
bl.parentNode.removeChild(bl);
var idNumber = 0;
SpawnBlock();
var divblocks = [];
function SpawnBlock()
{
UpdateBlock();
setTimeout(SpawnBlock, 800);
}
function UpdateBlock()
{
var block = document.createElement("div");
block.style.width = "25px";
block.style.height = "25px";
block.style.background = "lightgrey"
block.style.top = "-25px";
block.style.left = Math.random() * 455 + "px";
block.style.position = "absolute";
block.id = "block" + ++idNumber;
//block.speed = 0.5;
sym.$("Stage").append(block);
sym.$("#block"+idNumber).transition({top:"800px"},8000,"linear");
divblocks.push(block.id);
if (divblocks.length > 800)
{
$(divblocks[0]).Remove();
}
}

Replace the end of a File Name (SRC)

i'm having a bit of a problem here. I found this script on the web, and changed it around a bit for my needs.
This script shows a preview of the image following the mouse onmouseover.
Originally, there was only one way of doing this. But i have 2 different sections on my website in which i want to display images with different attributes (height, width).
I was able to do that, the problem is that on the second section, the src (file name) is a thumbnail of the actual picture i want to display, so when it dows, it just blows up a very small picture, which looks very bad. But hopefully, this will make things easier: all the thumbnails are named whaterver_small.jpg and the originals, whatever.jpg Now, if i could remove _small or _small.jpg and replace with .jpg from the end of that file, that would display the original picture for me, which would be great. This is how the funcion is called on html:
Original size, no need changing:
<a href=http://www.whatever.net/1.html');">
<img alt="Copper" border="1" height="64" src="http://www.whatever.net/whatever_small.jpg" width="85" onmouseover="showImage1(this.src,this,'Whatever')" /></a>
Show image2, the one i'm having problems with.
<a href=http://www.whatever.net/1.html');">
<img alt="Copper" border="1" height="64" src="http://www.whatever.net/whatever_small.jpg" width="85" onmouseover="showImage2(this.src,this,'Whatever')" /></a>
This is the script
var floatWidth = 150; // set the width of the floating image
var floatHeight = 100; // set its height
var floatWidth2 = 320; // set the width of the floating image
var floatHeight2 = 240; // set its height
var midWindow = 0;
var nContainer = "";
var IE = false;
if (navigator.appName == 'Microsoft Internet Explorer'){IE = true}
function stayHome(m){
if (IE)
{
var currX = event.clientX;
var currY = event.clientY;
}
else {
var currX = m.pageX;
var currY = m.pageY;
}
if (document.documentElement && document.documentElement.scrollLeft || document.documentElement && document.documentElement.scrollTop)
{
var iL = document.documentElement.scrollLeft;
var iV = document.documentElement.scrollTop;
}
else {
var iL = document.body.scrollLeft;
var iV = document.body.scrollTop;
}
if (currX > midWindow+80)
{
var msgWidth = nContainer.clientWidth;
if (IE){nContainer.style.left = (currX-msgWidth-10+iL)+'px'}
else {nContainer.style.left = (currX-msgWidth-10)+'px'}
}
else {
if (IE){nContainer.style.left = (currX+15+iL)+'px'}
else {nContainer.style.left = (currX+15)+'px'}
}
if (IE){nContainer.style.top = (currY+iV-(floatHeight/2)+70)+'px'}
else {nContainer.style.top = (currY-(floatHeight/2)+70)+'px'}
}
function hideImage(){
while (nContainer.lastChild)
{nContainer.removeChild(nContainer.lastChild)}
document.getElementById('isFloat').style.display = 'none';
}
function showImage(isImg,currItem,currCaption){
document.getElementById('isFloat').style.display = 'inline';
nIMG = document.createElement('img');
nContainer.appendChild(nIMG);
nIMG.setAttribute('src',isImg);
nIMG.setAttribute('width',floatWidth);
nIMG.setAttribute('height',floatHeight);
nCaption = document.createElement('div');
nCaption.style.textAlign = "center";
nCaption.style.backgroundColor = '#EAE3C6';
nCaption.style.padding = '5px';
nCaption.style.color = '#000000';
nCaption.style.fontFamily = 'Sans-serif';
nCaption.style.fontSize = '10pt';
nCaption.style.borderTop = "1px solid black";
nContainer.appendChild(nCaption);
nCaption.innerHTML = currCaption;
currItem.onmouseout=hideImage;
}
function showImage2(isImg,currItem,currCaption){
document.getElementById('isFloat').style.display = 'inline';
nIMG = document.createElement('img');
nContainer.appendChild(nIMG);
nIMG.setAttribute('src',isImg);
nIMG.setAttribute('width',floatWidth2);
nIMG.setAttribute('height',floatHeight2);
nCaption = document.createElement('div');
nCaption.style.textAlign = "center";
nCaption.style.backgroundColor = '#EAE3C6';
nCaption.style.padding = '5px';
nCaption.style.color = '#000000';
nCaption.style.fontFamily = 'Sans-serif';
nCaption.style.fontSize = '10pt';
nCaption.style.borderTop = "1px solid black";
nContainer.appendChild(nCaption);
nCaption.innerHTML = currCaption;
currItem.onmouseout=hideImage;
}
function getMidWindow(){
if (document.documentElement && document.documentElement.scrollLeft || document.documentElement && document.documentElement.scrollTop)
{
midWindow = document.documentElement.clientWidth/2;
}
else {
midWindow = document.body.clientWidth/2;
}
}
function initFloatImg(){
var nBody = document.getElementsByTagName('body')[0];
var nDiv = document.createElement('div');
nDiv.id = "isFloat";
nDiv.style.position = "absolute";
nDiv.style.top = "0px";
nDiv.style.left = "0px";
nDiv.style.border = "1px solid black";
nDiv.style.padding = "5px";
nDiv.style.backgroundColor = "#ffffff"
nBody.appendChild(nDiv);
nContainer = document.getElementById('isFloat');
document.onmousemove = stayHome;
hideImage();
if (!IE){document.captureEvents(Event.mousemove)}
getMidWindow();
}
onload=initFloatImg;
onresize=getMidWindow;
Update:
Ok, so i updated the script in this page, and it works perfectly now.
I ran into another problem, when the picture that has the mouse over, is near the end of the page, the preview is cutoff. I'd like to be able to move the preview up, so there's no scroll bar.
Here's a live example of a functional one: http://www.soccer.com/Navigation.process?Ne=178&N=4294960224+346
Where the picture is never cutoff.
Replace following line in the showImage2 function
nIMG.setAttribute('src',isImg);
with
nIMG.setAttribute('src',isImg.replace(/_small\./, '.'));
This will remove all _small matches from all of your image sources, if I'm understanding what you want correctly:
$("img").each(function() {
$(this).attr("src", $(this).attr("src").replace("/_small(?=\.)/", ""));
});

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