I have multiple images in an html page.I want to use html2canvas to convert the page to image.The images are local and from same source.It always keep on showing the error msg " Unable to get image data from canvas because the canvas has been tainted by cross-origin data."
The same code will work for one image or multiple copy of same image.
<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<meta name="language" content="de">
<script type="text/javascript" src="./js/jquery-1.9.1.js"></script>
<script type="text/javascript" src="js/html2canvas.min.js"></script>
<script type="text/javascript">
$(document).ready(function() {
var target = $('#mainDiv');
html2canvas(target, {
onrendered: function(canvas) {
var data = canvas.toDataURL();
var img = document.getElementById('img1');
img.src = data;
}
});
});
</script>
</head>
<body>
<div id="mainDiv">
<div id="div1" ><p>paragraph 1 paragraph 1 paragraph 1 paragraph 1 paragraph 1 paragraph 1 paragraph 1 paragraph 1 </p></div>
<div id="div2" ><p>paragraph2 paragraph2 paragraph2 paragraph2 paragraph2 paragraph2 paragraph2 paragraph2 </p></div>
<img src="images/01.jpg" >
<img src="images/02.jpg" >
<img src="images/03.jpg" >
<img src="images/04.jpg" >
</div>
<img id="img1"></img>
</body>
</html>
I am not sure what does the error message mean.Also if somebody can tell me how do i make this work with multiple images, it will be very helpful
just remove what you dont need. ie, i have Div1,Div2 etc
function PrintChartCanvas(divId) {
//div canvas
var divObj = html2canvas($('#div' + divId));
var divQueu = divObj.parse();
var divCanvas = divObj.render(divQueu);
divImg = divCanvas.toDataURL();
return divImg;
}
document.getElementById("img1").src = PrintChartCanvas(3);
This should work
Related
I have tried so many URL variations for Flickr and all attempts have failed to load my image gallery into my own webpage.
I am pretty sure its the URL. If I replace the URL with:
"api.flickr.com/services/feeds/photos_public.gne?jsoncallback=?"
all works fine to load public photos from Flickr, but to load my own album (URL below), it won't work.
Yes I have a valid API from Flickr. I also checked the script syntax in "jsbin.com" and all of that is good.
Can anyone help resolve this?
Here is the jQuery script:
(function() {
var flickerUrl = "https://api.flickr.com/services/rest/?&method=flickr.people.getPublicPhotos&api_key=<removed by edit>&user_id=135938131#N02&format=json&jsoncallback=?";
$.getJSON(flickerUrl)
.done(function(data) {
$.each(data.items, function(i, item) {
var image = $("<img>")
.attr("src", item.media.m)
.attr("title", item.title);
$("<a>")
.attr("href", item.link)
.attr("target", "_blank")
.html(image)
.appendTo("#images");
if ( i === 8 ) {
return false;
}
});
});
})
();
HTML
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>Flickr Image Gallery</title>
<link rel="stylesheet" href="css/main.css" />
</head>
<body>
<h1>Natural Scenery</h1>
<br>
<div id="images"></div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js"></script>
<script src="./js/flickrgallery.js"></script>
</body>
</html>
I am having lots of problem accessing any objects from a Yahoo Boss YQL Json Response data. I used this YQL Console for Boss Search Tables.
Here is what I have done:
<!DOCTYPE HTML>
<html>
<head>
<script src="http://code.jquery.com/jquery-2.0.3.min.js" type="text/javascript"></script>
<script type="text/javascript">
var url = "https://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20boss.search%20where%20service%20%3D%22images%22%20AND%20count%3D%221%22%20AND%20q%3D%22iphone6%22%20AND%20ck%20%3D%20%22MYCONSUMER_KEY%22%20AND%20secret%3D%22MYCONSUMER_SECRET%22%3B&format=json&env=store%3A%2F%2Fdatatables.org%2Falltableswithkeys";
(function showPix()
{
$.getJSON(url, function (data)
{
console.log(data);
var myObj = data.results.bossresponse.images.results.result.clickurl;
$.each(myObj, function ()
{
$('#pix').append(this);
});
});
})();
</script>
</head>
<body>
<div id="pix">
</div>
<button onclick="showPix();">run</button>
</body>
</html>
The console.log(); gives me one object that contains the image, but I cannot manage to show the image on the screen. And it tells me that showPix is undefined. Any help would be greatly appreciated. TIA
I figured this out as follows:
<html>
<head><title>YQL and RSS: Yahoo Top News Stories</title>
<style type='text/css'>
#results{ width: 40%; margin-left: 30%; border: 1px solid gray; padding: 5px; height: 200px; overflow: auto; }
</style>
<script type='text/javascript'>
// Parses returned response and extracts
// the title, links, and text of each news story.
function top_stories(o){
var items = o.query.results.item;
var output = '';
var no_items=items.length;
for(var i=0;i<no_items;i++){
var title = items[i].title;
var link = items[i].link;
var desc = items[i].description;
output += "<h3><a href='" + link + "'>"+title+"</a></h3>" + desc + "<hr/>";
}
// Place news stories in div tag
document.getElementById('results').innerHTML = output;
}
</script>
</head>
<body>
<!-- Div tag for stories results -->
<div id='results'></div>
<!-- The YQL statment will be assigned to src. -->
<script src='https://query.yahooapis.com/v1/public/yql?q=select%20title%20from%20rss%20where%20url%3D%22http%3A%2F%2Frss.news.yahoo.com%2Frss%2Ftopstories%22&format=json&callback=top_stories'></script>
</body>
Is there a way to use an svg element as an icon for the Microsoft.Maps.Pushpin?
I created an svg
element like this:
var fillcolor = "#ff0222";
var svg1 = document.createElementNS("http://www.w3.org/2000/svg", "svg");
svg1.setAttribute("height",50);
svg1.setAttribute("width",50);
var circles = document.createElementNS("http://www.w3.org/2000/svg", "circle");
circles.setAttribute("cx",25);
circles.setAttribute("cy",25);
circles.setAttribute("r",25);
circles.setAttribute("fill",fillcolor);
svg1.appendChild(circles);
On the Microsoft.Maps.Pushpin it is possible to set the options (PushpinOptions) where you can specify the htmlContent property to the value of your choice.
See: http://msdn.microsoft.com/en-us/library/gg427629.aspx
And the iSDK sample: http://www.bingmapsportal.com/isdk/ajaxv7#Pushpins15
The code should be inspired by something like this:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>
<title>Add pushpin with options</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<script type="text/javascript" src="http://ecn.dev.virtualearth.net/mapcontrol/mapcontrol.ashx?v=7.0"></script>
<script type="text/javascript">
var map = null;
function getMap()
{
map = new Microsoft.Maps.Map(document.getElementById('myMap'), {credentials: 'Your Bing Maps Key'});
}
function addCustomPushpin()
{
var pushpinOptions = {width: null, height: null, htmlContent: "<div style='font-size:12px;font-weight:bold;border:solid 2px;background-color:LightBlue;width:100px;'>Custom Pushpin</div>"};
var pushpin= new Microsoft.Maps.Pushpin(map.getCenter(), pushpinOptions);
map.entities.push(pushpin);
}
</script>
</head>
<body onload="getMap();">
<div id='myMap' style="position:relative; width:400px; height:400px;"></div>
<div>
<input type="button" value="AddCustomPushpin" onclick="addCustomPushpin();" />
</div>
</body>
</html>
I am new to jquery mobile, and am having problems getting content I have inserted dymically using pageinit to display on the first time of the form response page. It displays on subsequent refreshes of the page. I also don't want the content to cache.
I need to use querystring values like ?blah=1&blah=2 as I use these in my call to an external json file.
How should I be doing this? If I use rel="external", and setting ajax to false, I have problems with issues on android. So using pageinit in the header, how do I make the dynamically loaded content (in the example, the time in seconds) in the 2nd page display first time round?
I have simplified the problem into test pages below.
Expected behaviour. When you click on the submit button of the form you go through to the 2nd page which should display the no of seconds taken from datetime
Actual behaviour. The seconds/time does not display on the 2nd page until the page is refreshed.
Elsewhere, I have come across the suggestion to put the pageinit code into the div itself, however this has caused the content to cache on android (ie the no of seconds remains the same), so I don't want to do this.
Any ideas on how I should approach this would be much appreciated
Sample code
=======
Page 1 - form
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="http://code.jquery.com/mobile/1.0.1/jquery.mobile-1.0.1.min.css" />
<script src="http://code.jquery.com/jquery-1.6.4.min.js"></script>
<script src="http://code.jquery.com/mobile/1.0.1/jquery.mobile-1.0.1.min.js"></script>
<script src="/scripts/myinit.js"></script>
</head>
<body>
<div data-role="page" id="page1" data-add-back-btn="true">
<div data-role="content" data-theme="b">
<form action="page_2.htm" method="GET" id="form1" name="form1">
<input type="hidden" name="seconds" value="">
<div class="ui-block-b"><button type="submit" data-theme="a">Submit</button></div>
</form>
</div>
</div>
</body>
</html>
===
Page 2 form response page
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="http://code.jquery.com/mobile/1.0.1/jquery.mobile-1.0.1.min.css" />
<script src="http://code.jquery.com/jquery-1.6.4.min.js"></script>
<script src="http://code.jquery.com/mobile/1.0.1/jquery.mobile-1.0.1.min.js"></script>
<script src="/scripts/myinit.js"></script>
</head>
<body>
<div data-role="page" id="page2" data-add-back-btn="true">
<div id="job" data-role="content">
</div>
</div>
</body>
</html>
===
custom javascript file called /scripts/myinit.js (included in both pages above)
$('#page1').live('pageinit', function(event) {
var seconds = new Date().getTime();
$('input[name=seconds]').val(seconds);
});
$('#page2').live('pageinit', function(event) {
var querystring = location.search.replace( '?', '' ).split( '&' );
var queryObj = {};
for ( var i=0; i<querystring.length; i++ ) {
var name = querystring[i].split('=')[0];
var value = querystring[i].split('=')[1];
queryObj[name] = value;
}
var seconds = queryObj["seconds"];
$('#job').append("seconds=" + seconds);
});
try changing pageinit by pageshow. i had the same problem and it worked for me
Link to the external file like this:
HTML --
I'm a Link
JS --
$(document).delegate('#external-link', 'click', function () {
$.mobile.changePage('/path/to/file.html', { reloadPage : true });
return false;
});
Setting the reloadPage option for the changePage() function will allow the external page to be refreshed rather than loading the cached version. Since the external page will be refreshed, the pageinit code for it will run when it's initialized and your code should function properly.
Documentation: http://jquerymobile.com/demos/1.1.0-rc.1/docs/api/methods.html
I would like to append some code to a page using jQuery/jQuery mobile,
but I am tripping up on some of the page() and pageshow and refresh methods.
Here is my code. you can cut, paste and run as is.
<!DOCTYPE html>
<html>
<head>
<title>Page Title</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="http://code.jquery.com/mobile/1.0b2/jquery.mobile-1.0b2.min.css" />
<script type="text/javascript" src="http://code.jquery.com/jquery-1.6.2.min.js"></script>
<script type="text/javascript" src="http://code.jquery.com/mobile/1.0b2/jquery.mobile-1.0b2.min.js"></script>
<script>
//$(document).ready(function() // get error when I use this
$('div').live('pageshow', function () {
function fnCreateGroups(){
var section = "<p>and add a whole bunch of html code...</p>";
myClone = $(section);
alert((myClone).html()); // this works
myClone.appendTo("#placeholder").page(); // but not appending
}
fnCreateGroups();
});
</script>
</head>
<body>
<div data-role="page">
<div id="placeholder">
<div data-role="content">
<div id="placeholder">this is a small amount of html code.</div>
</div>
</div>
</div>
</body>
</html>
Beta2 release notes:
http://jquerymobile.com/blog/2011/08/03/jquery-mobile-beta-2-released/
instead of:
myClone.appendTo("#placeholder").page();
try
myClone.appendTo("#placeholder").trigger('create');
From your comment:
You are running the live() on all div's
$('div').live('pageshow', function ()
try using the page id instead
$('#change_this_page_only').live('pageshow', function ()
and this:
<div data-role="page">
to something like this:
<div data-role="page" id="change_this_page_only">