vue调用摄像头进行拍照并能保存到本地的方法
时间：2022-09-16 10:17:12 | 栏目：vue | 点击：次
1. 使用Vue.js
把网页内容Ctrl+s保存到本地然后添加到项目中
https://cdn.jsdelivr.net/npm/vue/dist/vue.js
2. 创建目录
3.实现：
1. index.html
代码：
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title></title> <script src="vue.js"></script> </head> <body> <div id="vueapp"> <video ref="video" autoplay width="400" height="300"></video> <button @click="btnTakePhotoClicked()">Take photo</button> <canvas ref="canvas"width="400" height="300"></canvas> <a href="" download="canvas.jpeg" id="save_herf"> <img src="" id="save_img" alt=""> </a> </div> <script src="app.js"></script> </body> </html>
2. app.js
代码：
new Vue({
el:"#vueapp",
mounted(){
this._initVueApp();
this.btnTakePhotoClicked();
},
methods:{
async _initVueApp(){
this.$refs.video.srcObject= await navigator.mediaDevices.getUserMedia({video:true,audio:false});
this._context2d=this.$refs.canvas.getContext("2d");
this.canvas=this.$refs.canvas;
},
btnTakePhotoClicked(){
this._context2d.drawImage(this.$refs.video,0,0,400,300)
var img = document.createElement("img"); // 创建img元素
img.src =this.canvas.toDataURL("image/png"); // 截取视频第一帧
var svaeHref = document.getElementById("save_herf");
console.log(img.src)
var sd=document.getElementById("save_img");
svaeHref.href = img.src;
sd.src=img.src
},
}
});
4.效果
