qq_42820007的博客

var a = "江西省??抚州市??黎川县??123";a.replace(/\?\?/g,"$"); //"江西省$抚州市$黎川县$123"a.replace(/\?\?/g,"$$"); //"江西省$抚州市$黎川县$123"a.replace(/\?\?/g,"$$$"); //"江西省$$抚州市$$黎川县$$123"a.replace(/\?\?/g,"$$$$"); //"江西省$$抚州市$$黎川县$$123"以此类推 为什么呢？？？？？我也不知道...

Blob对象生成一个网址路径var src = URL.createObjectURL(blob);生成Blob对象function basetoBlob(base64data){ var u8arr = convertDataURIToBinary(base64data); var mine = "application/pdf";//固定为pdf格式 return new Blob([u8arr], {type: mime});}将base64字符串转换成bytefunction