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2014/10/16 ¤W¤È 12:02:44
jquery Programming Glossary: ctxjQuery - use canvas to draw lines between divs http://stackoverflow.com/questions/1104295/jquery-use-canvas-to-draw-lines-between-divs Now both points are in reference to the canvas var ctx document.getElementById 'canvas' .getContext '2d' ctx.beginPath.. var ctx document.getElementById 'canvas' .getContext '2d' ctx.beginPath ctx.moveTo centerX.x centerX.y ctx.lineTo centerZ.x.. 'canvas' .getContext '2d' ctx.beginPath ctx.moveTo centerX.x centerX.y ctx.lineTo centerZ.x centerZ.y ctx.stroke..
http://stackoverflow.com/questions/12539862/ios6-and-safari-photo-uploading-file-api-canvas-jquery-ajax-uploading-and canvas.width imageWidth canvas.height imageHeight var ctx canvas.getContext 2d ctx.drawImage this 0 0 imageWidth imageHeight.. canvas.height imageHeight var ctx canvas.getContext 2d ctx.drawImage this 0 0 imageWidth imageHeight The resized file ready..
How to get image bytes string (base64) in html5, jquery, javascript? http://stackoverflow.com/questions/12950465/how-to-get-image-bytes-string-base64-in-html5-jquery-javascript var myCanvas document.getElementById 'mycanvas' var ctx myCanvas.getContext '2d' ctx.drawImage myImage 0 0 var mydataURL.. 'mycanvas' var ctx myCanvas.getContext '2d' ctx.drawImage myImage 0 0 var mydataURL myCanvas.toDataURL 'image..
Set custom HTML5 required field validation message http://stackoverflow.com/questions/13798313/set-custom-html5-required-field-validation-message I came up with function exports function valOrFunction val ctx args if typeof val function return val.apply ctx args else.. val ctx args if typeof val function return val.apply ctx args else return val function InvalidInputHelper input options..
jQuery Mobile: Markup Enhancement of dynamically added content http://stackoverflow.com/questions/14550396/jquery-mobile-markup-enhancement-of-dynamically-added-content if this.is 'input' this.val newText go up the tree var ctx this.closest '.ui btn' 'span.ui btn text' ctx .text newText.. tree var ctx this.closest '.ui btn' 'span.ui btn text' ctx .text newText return jQuery Working example http jsfiddle.net..
Generate excel sheet from html tables using jquery http://stackoverflow.com/questions/15567086/generate-excel-sheet-from-html-tables-using-jquery if table.nodeType table document.getElementById table var ctx worksheet name 'Worksheet' table table.innerHTML window.location.href..
How to drag images / objects within Canvas? http://stackoverflow.com/questions/18333936/how-to-drag-images-objects-within-canvas function var canvas document.getElementById canvas var ctx canvas.getContext 2d ctx.strokeStyle red ctx.lineWidth 5 var.. canvas var ctx canvas.getContext 2d ctx.strokeStyle red ctx.lineWidth 5 var canvasOffset #canvas .offset.. canvas var ctx canvas.getContext 2d ctx.strokeStyle red ctx.lineWidth 5 var canvasOffset #canvas .offset var offsetX canvasOffset.left..
jQuery equivalent of getting the context of a Canvas http://stackoverflow.com/questions/2925130/jquery-equivalent-of-getting-the-context-of-a-canvas the context of a Canvas I have the following working code ctx document.getElementById canvas .getContext '2d' Is there any.. Is there any way to re write it to use Doing this fails ctx #canvas .getContext '2d' javascript jquery html html5 canvas..
jQuery dynamic canvas creation, $ctx.getContext is not a function http://stackoverflow.com/questions/3239680/jquery-dynamic-canvas-creation-ctx-getcontext-is-not-a-function dynamic canvas creation ctx.getContext is not a function When I try to execute this in.. not a function When I try to execute this in jQuery I get ctx.getContext is not a function in firebug. var ctx ' canvas '.. I get ctx.getContext is not a function in firebug. var ctx ' canvas ' width '100' height '100' widget.append ctx ctx.getContext..
How to draw number lines using HTML http://stackoverflow.com/questions/4182494/how-to-draw-number-lines-using-html Using Canvas Element function var canvas 'canvas' 0 var ctx canvas.getContext '2d' var w canvas.width 700 var h canvas.height.. '2d' var w canvas.width 700 var h canvas.height 400 with ctx fillStyle '#000' fillRect 0 0 w h fill beginPath lineWidth 2..
capturing html5 canvas output as video or swf or png sequence? http://stackoverflow.com/questions/4781602/capturing-html5-canvas-output-as-video-or-swf-or-png-sequence code var cnv document.getElementById myCanvas var ctx cnv.getContext 2d if ctx var img new Image ctx.fillStyle rgba.. myCanvas var ctx cnv.getContext 2d if ctx var img new Image ctx.fillStyle rgba 255 0 0 0.5 ctx.fillRect.. var ctx cnv.getContext 2d if ctx var img new Image ctx.fillStyle rgba 255 0 0 0.5 ctx.fillRect 0 0 300 300 ctx.fill..
Convert an image into binary data in javascript [duplicate] http://stackoverflow.com/questions/5420384/convert-an-image-into-binary-data-in-javascript img.height Copy the image contents to the canvas var ctx canvas.getContext 2d ctx.drawImage img 0 0 Get the data URL.. image contents to the canvas var ctx canvas.getContext 2d ctx.drawImage img 0 0 Get the data URL formatted image Firefox supports..
Compile/Save/Export HTML as a PNG Image using Jquery http://stackoverflow.com/questions/5941631/compile-save-export-html-as-a-png-image-using-jquery canvas var canvas document.getElementById 'captured' var ctx canvas.getContext '2d' var image new Image image.src capture.. way canvas.width image.width canvas.height image.height ctx.drawImage image 0 0 Your plugin probably uses this method. You..
How to change color of an image using jquery [closed] http://stackoverflow.com/questions/9303757/how-to-change-color-of-an-image-using-jquery mug var canvas document.createElement canvas var ctx canvas.getContext 2d var originalPixels null var currentPixels.. img canvas.width img.width canvas.height img.height ctx.drawImage img 0 0 img.naturalWidth img.naturalHeight 0 0 img.width.. img.naturalHeight 0 0 img.width img.height originalPixels ctx.getImageData 0 0 img.width img.height currentPixels ctx.getImageData..
jQuery - use canvas to draw lines between divs http://stackoverflow.com/questions/1104295/jquery-use-canvas-to-draw-lines-between-divs centerX.y canvasPos.y centerZ.x canvasPos.x centerZ.y canvasPos.y Now both points are in reference to the canvas var ctx document.getElementById 'canvas' .getContext '2d' ctx.beginPath ctx.moveTo centerX.x centerX.y ctx.lineTo centerZ.x centerZ.y.. canvasPos.y Now both points are in reference to the canvas var ctx document.getElementById 'canvas' .getContext '2d' ctx.beginPath ctx.moveTo centerX.x centerX.y ctx.lineTo centerZ.x centerZ.y ctx.stroke Now you should have a line between both.. Now both points are in reference to the canvas var ctx document.getElementById 'canvas' .getContext '2d' ctx.beginPath ctx.moveTo centerX.x centerX.y ctx.lineTo centerZ.x centerZ.y ctx.stroke Now you should have a line between both divs. You should..
http://stackoverflow.com/questions/12539862/ios6-and-safari-photo-uploading-file-api-canvas-jquery-ajax-uploading-and canvas with new image var canvas document.createElement 'canvas' canvas.width imageWidth canvas.height imageHeight var ctx canvas.getContext 2d ctx.drawImage this 0 0 imageWidth imageHeight The resized file ready for upload var finalFile canvas.toDataURL.. canvas document.createElement 'canvas' canvas.width imageWidth canvas.height imageHeight var ctx canvas.getContext 2d ctx.drawImage this 0 0 imageWidth imageHeight The resized file ready for upload var finalFile canvas.toDataURL fileType if formdata..
How to get image bytes string (base64) in html5, jquery, javascript? http://stackoverflow.com/questions/12950465/how-to-get-image-bytes-string-base64-in-html5-jquery-javascript canvas Javascript var myImage document.getElementById 'myimage' var myCanvas document.getElementById 'mycanvas' var ctx myCanvas.getContext '2d' ctx.drawImage myImage 0 0 var mydataURL myCanvas.toDataURL 'image jpg' share improve this answer..
Set custom HTML5 required field validation message http://stackoverflow.com/questions/13798313/set-custom-html5-required-field-validation-message got very much attention here is a nice configurable snippet I came up with function exports function valOrFunction val ctx args if typeof val function return val.apply ctx args else return val function InvalidInputHelper input options input.setCustomValidity.. snippet I came up with function exports function valOrFunction val ctx args if typeof val function return val.apply ctx args else return val function InvalidInputHelper input options input.setCustomValidity valOrFunction options.defaultText..
jQuery Mobile: Markup Enhancement of dynamically added content http://stackoverflow.com/questions/14550396/jquery-mobile-markup-enhancement-of-dynamically-added-content this.is 'a' 'span.ui btn text' this .text newText return if this.is 'input' this.val newText go up the tree var ctx this.closest '.ui btn' 'span.ui btn text' ctx .text newText return jQuery Working example http jsfiddle.net Gajotres.. return if this.is 'input' this.val newText go up the tree var ctx this.closest '.ui btn' 'span.ui btn text' ctx .text newText return jQuery Working example http jsfiddle.net Gajotres mwB22 Get correct maximum content height In case..
Generate excel sheet from html tables using jquery http://stackoverflow.com/questions/15567086/generate-excel-sheet-from-html-tables-using-jquery w g function m p return c p return function table name if table.nodeType table document.getElementById table var ctx worksheet name 'Worksheet' table table.innerHTML window.location.href uri base64 format template ctx share improve this..
How to drag images / objects within Canvas? http://stackoverflow.com/questions/18333936/how-to-drag-images-objects-within-canvas ivory padding 20px #canvas border 1px solid red style script function var canvas document.getElementById canvas var ctx canvas.getContext 2d ctx.strokeStyle red ctx.lineWidth 5 var canvasOffset #canvas .offset var offsetX canvasOffset.left.. border 1px solid red style script function var canvas document.getElementById canvas var ctx canvas.getContext 2d ctx.strokeStyle red ctx.lineWidth 5 var canvasOffset #canvas .offset var offsetX canvasOffset.left var offsetY canvasOffset.top.. red style script function var canvas document.getElementById canvas var ctx canvas.getContext 2d ctx.strokeStyle red ctx.lineWidth 5 var canvasOffset #canvas .offset var offsetX canvasOffset.left var offsetY canvasOffset.top var lastX 0 var..
jQuery equivalent of getting the context of a Canvas http://stackoverflow.com/questions/2925130/jquery-equivalent-of-getting-the-context-of-a-canvas equivalent of getting the context of a Canvas I have the following working code ctx document.getElementById canvas .getContext '2d' Is there any way to re write it to use Doing this fails ctx #canvas .getContext.. code ctx document.getElementById canvas .getContext '2d' Is there any way to re write it to use Doing this fails ctx #canvas .getContext '2d' javascript jquery html html5 canvas share improve this question Try #canvas 0 .getContext..
jQuery dynamic canvas creation, $ctx.getContext is not a function http://stackoverflow.com/questions/3239680/jquery-dynamic-canvas-creation-ctx-getcontext-is-not-a-function dynamic canvas creation ctx.getContext is not a function When I try to execute this in jQuery I get ctx.getContext is not a function in firebug. var.. dynamic canvas creation ctx.getContext is not a function When I try to execute this in jQuery I get ctx.getContext is not a function in firebug. var ctx ' canvas ' width '100' height '100' widget.append ctx ctx.getContext.. is not a function When I try to execute this in jQuery I get ctx.getContext is not a function in firebug. var ctx ' canvas ' width '100' height '100' widget.append ctx ctx.getContext '2d' Any idea why I get this error How do I dynamically..
How to draw number lines using HTML http://stackoverflow.com/questions/4182494/how-to-draw-number-lines-using-html jquery html html5 canvas share improve this question Using Canvas Element function var canvas 'canvas' 0 var ctx canvas.getContext '2d' var w canvas.width 700 var h canvas.height 400 with ctx fillStyle '#000' fillRect 0 0 w h fill beginPath.. function var canvas 'canvas' 0 var ctx canvas.getContext '2d' var w canvas.width 700 var h canvas.height 400 with ctx fillStyle '#000' fillRect 0 0 w h fill beginPath lineWidth 2 strokeStyle '#f00' moveTo w 7 h 2 lineTo 6 w 7 h 2 stroke for..
capturing html5 canvas output as video or swf or png sequence? http://stackoverflow.com/questions/4781602/capturing-html5-canvas-output-as-video-or-swf-or-png-sequence or external images for drawing on canvas I used the following code var cnv document.getElementById myCanvas var ctx cnv.getContext 2d if ctx var img new Image ctx.fillStyle rgba 255 0 0 0.5 ctx.fillRect 0 0 300 300 ctx.fill img.onload function.. for drawing on canvas I used the following code var cnv document.getElementById myCanvas var ctx cnv.getContext 2d if ctx var img new Image ctx.fillStyle rgba 255 0 0 0.5 ctx.fillRect 0 0 300 300 ctx.fill img.onload function ctx.drawImage img.. I used the following code var cnv document.getElementById myCanvas var ctx cnv.getContext 2d if ctx var img new Image ctx.fillStyle rgba 255 0 0 0.5 ctx.fillRect 0 0 300 300 ctx.fill img.onload function ctx.drawImage img 0 0 img.src my external..
Convert an image into binary data in javascript [duplicate] http://stackoverflow.com/questions/5420384/convert-an-image-into-binary-data-in-javascript canvas canvas.width img.width canvas.height img.height Copy the image contents to the canvas var ctx canvas.getContext 2d ctx.drawImage img 0 0 Get the data URL formatted image Firefox supports PNG and JPEG. You could check.. canvas.width img.width canvas.height img.height Copy the image contents to the canvas var ctx canvas.getContext 2d ctx.drawImage img 0 0 Get the data URL formatted image Firefox supports PNG and JPEG. You could check img.src to guess the original..
Compile/Save/Export HTML as a PNG Image using Jquery http://stackoverflow.com/questions/5941631/compile-save-export-html-as-a-png-image-using-jquery string. You can send it to your server or draw it on another canvas var canvas document.getElementById 'captured' var ctx canvas.getContext '2d' var image new Image image.src capture the image is not immediately usable image .load function jquery.. image is not immediately usable image .load function jquery way canvas.width image.width canvas.height image.height ctx.drawImage image 0 0 Your plugin probably uses this method. You can also check its source code. Edit To send it to your server..
How to change color of an image using jquery [closed] http://stackoverflow.com/questions/9303757/how-to-change-color-of-an-image-using-jquery 25 height 25 onload getPixels this var mug document.getElementById mug var canvas document.createElement canvas var ctx canvas.getContext 2d var originalPixels null var currentPixels null function getPixels img canvas.width img.width canvas.height.. var originalPixels null var currentPixels null function getPixels img canvas.width img.width canvas.height img.height ctx.drawImage img 0 0 img.naturalWidth img.naturalHeight 0 0 img.width img.height originalPixels ctx.getImageData 0 0 img.width.. img.height ctx.drawImage img 0 0 img.naturalWidth img.naturalHeight 0 0 img.width img.height originalPixels ctx.getImageData 0 0 img.width img.height currentPixels ctx.getImageData 0 0 img.width img.height img.onload null We need the..
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