关于前端:前端Base64处理

获取本地的图片解决成base64

getBase64(url, callback){      var canvas = document.createElement("canvas");   //创立canvas DOM元素，并设置其宽高和图片一样      var ctx = canvas.getContext("2d");      var img = new Image;      img.crossOrigin = 'Anonymous';      img.src = url;      console.log(url)      img.onload = function () {          canvas.height = 60; //指定画板的高度,自定义          canvas.width = 60; //指定画板的宽度，自定义          ctx.drawImage(img, 0, 0, 60, 60); //参数可自定义          var dataURL = canvas.toDataURL();          callback.call(this, dataURL); //回掉函数获取Base64编码          canvas = null;      };    },

调用：

shareGame(){      this.getBase64('../assets/logo.png',function (base64){        console.log(base64)          let image = base64,      })    },