Home > Article > Web Front-end > JS implements a method to generate a QR code from a link and convert it into a picture
This article mainly introduces the JS method of generating QR codes from links and converting them into pictures, involving qrcodejs plug-in and js picture generation related operation skills. Friends in need can refer to the following
Examples of this article Use JS to implement the method of generating a QR code from a link and converting it into a picture. Share it with everyone for your reference, the details are as follows:
<p id="code"></p> <img id="img"/> <script type="text/javascript"> var qrcode=$("#code").qrcode({ render:'canvas||table', width: 200, //宽度 height:200, //高度 text: "http://www.baidu.com" //任意内容 }).hide(); var canvas=qrcode.find('canvas').get(0); //如果有循环,此句必不可少 qrcode.find('canvas').remove(); var data = canvas.toDataURL('image/jpg'); $('#img').attr('src',data) ; saveFile(data,"fd范德萨范德萨"); //转为图片的方法,需要上门的data function saveFile(data,filename){ var save_link=document.createElementNS('http://www.w3.org/1999/xhtml', 'a'); save_link.href=data; save_link.download=filename; var event=document.createEvent('MouseEvents'); event.initMouseEvent('click',true,false,window,0,0,0,0,0,false,false,false,false,0,null); save_link.dispatchEvent(event); }; </script>
The above is what I compiled for everyone, I hope it will be helpful to everyone in the future.
Related articles:
Example of how to return to the homepage of the sharing page of the WeChat applet
Detailed explanation of VUE's response to ElTableColumn in element-ui Extension
Detailed explanation of Vue custom dynamic component instance
The above is the detailed content of JS implements a method to generate a QR code from a link and convert it into a picture. For more information, please follow other related articles on the PHP Chinese website!