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29 maj 2009 · Is it possible to capture or print what's displayed in an HTML canvas as an image or PDF? I'd like to generate an image via canvas and be able to generate a PNG from that image.
Description. The save() method saves the state of the drawing context with all its attributes: clipping, transformation, direction, fillStyle, font, globalAlpha, globalCompositeOperation, imageSmoothingEnabled, lineCap, lineDashOffset, lineJoin, lineWidth, miterLimit, shadowBlur, shadowColor, shadowOffsetX, shadowOffsetY, strokeStyle, textAlign
The HTML <form> element is used to create an HTML form for user input: <form>. . form elements. . </form>. The <form> element is a container for different types of input elements, such as: text fields, checkboxes, radio buttons, submit buttons, etc.
function validateForm () {. // This function deals with validation of the form fields. var x, y, i, valid = true; x = document.getElementsByClassName("tab"); y = x [currentTab].getElementsByTagName("input"); // A loop that checks every input field in the current tab: for (i = 0; i < y.length; i++) {.
Use the HTML <img> element to define an image. Use the HTML src attribute to define the URL of the image. Use the HTML alt attribute to define an alternate text for an image, if it cannot be displayed. Use the HTML width and height attributes or the CSS width and height properties to define the size of the image.
1 gru 2012 · From here you can save in localStorage, create dataURIs etc. For example, Say from fileName we know the image is a .jpg , then you could display it by setting an <img> 's src to "data:image/jpeg;base64," + base64 .
var options = { margin: 1, filename: 'isolates.pdf', image: { type: 'jpeg', quality: 0.98 }, html2canvas: { scale: 2 }, jsPDF: { unit: 'in', format: 'letter', orientation: 'portrait' } }; Save the file:
