{ "key_pair_value_system": true, "answer_rating_count": "", "question_feedback_html": { "html_star": "", "html_star_feedback": "" }, "answer_average_rating_value": "", "answer_date_js": "2024-09-26T00:14:52-04:00", "answer_date": "2024-09-26 00:14:52", "is_docs_available": "", "is_excel_available": "", "is_pdf_available": "", "count_file_available": 0, "main_page": "student_question_view", "question_id": "13570639", "url": "\/study-help\/questions\/i-try-to-download-a-png-file-when-there-is-13570639", "question_creation_date_js": "2024-09-26T00:14:52-04:00", "question_creation_date": "Sep 26, 2024 12:14 AM", "meta_title": "[Solved] I try to download a png file. When there | SolutionInn", "meta_description": "Answer of - I try to download a png file. When there is a image on canvas, I add an image to canvas and call toDataURL it shows me | SolutionInn", "meta_keywords": "download,png,file,image,canvas,add,call,todataurl,shows,blank,page,data", "question_title_h1": "I try to download a png file. When there is a image on canvas, I add an image to canvas and call toDataURL it shows", "question_title": "I try to download a png file. When there is a image", "question_title_for_js_snippet": "I try to download a png file When there is a image on canvas, I add an image to canvas and call toDataURL it shows me a blank page, and data url is also blank downloadCanvasAsPng (elementId, link, smiles, itemName) I let canvas canvas document getElementById(elementId) link href canvas toDataURL) link download smiles itemName png link document createElement('a') const fileName smiles ' itemName ' png link download fileName const fileUrl canvas toDataURL() link href fileUrl link target self' link click()", "question_description": "

I try to download a png file.<\/strong><\/p>

When there is a image on canvas, I add an image to canvas and call toDataURL it shows me a blank page, and data url is also blank.<\/strong><\/p>

\"image\"image\"image<\/p> downloadCanvasAsPng (elementId, link, smiles, itemName) I let canvas; canvas document.getElementById(elementId); \/\/link.href canvas.toDataURL); \/\/link. download = smiles +-+ itemName + .png\"; link = document.createElement('a'); const fileName = smiles +-' + itemName + '.png\"; link.download fileName; const fileUrl-canvas . toDataURL(); link.href - fileUrl; link.target\"_self'; link.click()<\/htmlcanvaselement>", "transcribed_text": "", "related_book": { "title": "Professional Microsoft SQL Server 2012 Administration", "isbn": "1118106881, 9781118106884", "edition": "1st Edition", "authors": "Adam Jorgensen, Steven Wort", "cover_image": "https:\/\/dsd5zvtm8ll6.cloudfront.net\/si.question.images\/book_images\/2022\/02\/61fa21a7dcbd8_56761fa21a7603a5.jpg", "uri": "\/textbooks\/professional-microsoft-sql-server-2012-administration-1st-edition-9781118106884", "see_more_uri": "\/textbooks\/computer-science-generate-website-traffic-670" }, "question_posted": "2024-09-26 00:14:52", "step_by_step_answer": "The Answer is in the image, click to view ...", "students_also_viewed": [ { "url": "\/study-help\/federal-taxation-2023-comprehensive\/why-would-a-company-use-a-combination-of-facetoface-instruction-2123827", "description": "Why would a company use a combination of face-to-face instruction and web-based training?", "stars": 0 }, { "url": "\/the-following-describes-the-expenditure-cycle-manual-procedures-for-a", "description": "The following describes the expenditure cycle manual procedures for a hypothetical company. 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