Home > Developer > Web Develop

JS image to Base64

Source: Internet
Author: User
Developer on Alibaba Coud: Build your first app with APIs, SDKs, and tutorials on the Alibaba Cloud. Read more ＞

JS image to Base64

Sometimes you need to insert a picture into the HTML, you can not find a suitable network after the online to store these pictures, there is no way to convert the picture into text, and then directly into the HTML, through the Base64 encoding can solve the problem.

Nonsense not much to say directly on the code, do not know what is Base64 's own Baidu.

Code
  2. <! DOCTYPE html>
  8. <meta CharSet="UTF-8">
  10. <title> JS image to Base64</title>
  12. <script src="//cdn.bootcss.com/jquery/2.2.0/jquery.min.js"></script>
  14. <script>
  16. function Run (input_file,get_data) {
  18. /*input_file: File button Object */
  20. /*get_data: How to execute after successful conversion */
  22. if ( typeof(filereader) = = = ' undefined ' ) {
  24. Alert ("Sorry, your browser does not support FileReader and cannot convert the picture to Base64, please use modern browser operation!") ");
  26. } else {
  28. Try {
  30. / * image to Base64 core code * /
  32. var file = input_file. Files[0];
  34. //Here we judge the type if it is not a picture to return to remove can upload arbitrary files
  36. if (! /image\/\w+/ . Test (file. Type)) {
  38. Alert ("Make sure the file is an image type");
  40. return False ;
  42. }
  44. var reader = new filereader();
  46. Reader. onload = function (){
  48. Get_data (this. ) Result);
  50. }
  52. Reader. Readasdataurl (file);
  54. }catch (e) {
  56. Alert (' picture turns Base64 wrong! '+ e. toString ())
  58. }
  60. }
  62. }
  64. $ (function () {
  66. $ ("input"). Change (function () {
  68. Run (this, function (data) {
  70. $ (' img '). attr (' src ',data);
  72. $ (' textarea '). Val (data);
  74. });
  76. });
  78. });
  80. </script>
  84. <body>
  86. <input type="file">
  90. style="max-height:300px;" >
  94. <textarea style="Display:block; width:100%;height:30em; " ></textarea>
  96. </body>
 use of Base64 pictures
BASE64 format
DATA:[][;CHARSET=][;BASE64],
The use of Base64 in CSS
. demoimg{Background-image:url ("Data:image/jpg;base64,/9j/4qmzrxhpzgaasukqaagaaaal ....");
The use of Base64 in HTML

JS image to Base64

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

Related Keywords:
convert base64 to image online convert image to base64 javascript convert base64 to image jquery convert image to css base64 convert base64 to image php convert image to base64 jquery convert base64 string to image using php

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

What's Trending
Top 10 Tags
datastax versions naming convention zookeeper client class definition md5 microsoft sql server 2005 data structures exception handling error handling
Top 10 Keywords
microsoft download center down wordpress address url site address url wordpress address url windows installer 4 0 download 302 not found web address url definition site address url wordpress db2 integer mac os installation step by step pdf abbreviation for return

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

Get Started for Free

  • Sales Support

    1 on 1 presale consultation

    Chat Contact Sales

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

    Open a Ticket

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.

    Learn More