window.onload= function () {
let btnOpenVideo= document.getElementById('btnOpenVideo');
let btnTakePicture= document.getElementById('btnTakePicture');
let btnCloseVideo= document.getElementById('btnCloseVideo');
let video= document.getElementById('videoTest');
let canvas= document.getElementById('canvasTest').getContext('2d');
btnOpenVideo.onclick= function () {
window.navigator.getUserMedia({
video:true/*视频/摄像头*/
/*audio:true*//*音频/麦克风*/ },function (param) {
video.src= window.URL.createObjectURL(param);/*设置video控件路径,实时显示摄像头的图像*/ btnCloseVideo.onclick= function () {/*关闭摄像头*/ if (param.getTracks())/*Chrome*/ param.getTracks()[0].stop();
else param.stop();
};
btnTakePicture.onclick= function () {/*拍照*/ canvas.drawImage(document.getElementById('videoTest'),0,0,500,500);/*将拍摄的照片画到canvas中*/ };
},function (err) {
alert(err);
});
};
};
