1. Using Vue.js
Save the web content Ctrl+s to the local and add it to the project
https://cdn.jsdelivr.net/npm/vue/dist/vue.js
https://cdn.jsdelivr.net/npm/vue/dist/vue.js
2. Create a directory
3. Realize:
1. index.html
Code:
<!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
Code:
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. Effects
