jsscreenshot-tool

jsScreenShot

a real screen shot by JS

forget htmltocanvas

forget dom to canvas

忘记htmltocanvas 忘掉通过dom转canvas进行截图，既费劲，有bug又不好用，还会丢失样式和 字体，真正的所见即所得的截屏

通过navigator.mediaDevices.getDisplayMedia 将屏幕分享，然后投射到video，然后video绘制canvas实现真实截屏效果。

keyAPI

navigator.mediaDevices.getDisplayMedia

usage

// Down load the screenShot.js or copy into your js 


// import
import {screenCapture} from '../js/screenShot.js'
     
// prepare dom and video
let Dom = document.querySelector("#demo-area-to-shot")
let DomHeight = Dom.offsetHeight;
let DomWidth = Dom.offsetWidth;

let videoDom = document.querySelector("#testVideo")


// screenShot
screenCapture(videoDom,DomWidt,DomHeight)
            

欢迎学习交流！

reference

• https://w3c.github.io/mediacapture-screen-share/#dom-mediadevices-getdisplaymedia
• https://developer.mozilla.org/en-US/docs/Web/API/Screen_Capture_API
• https://developer.chrome.com/docs/web-platform/region-capture/