这个正则啥意思？

Question

return dataURL.replace(/^data:image\/(png|jpg);base64,/, "");

Answer 1

var dataURL = 'data:image/jpg;base64,1123'
console.log(dataURL.replace(/^data:image/(png|jpg);base64,/,""))
结果： 1123
一看就明白了
清除data:image/jpg;base64,或data:image/png;base64,开头的字符串

Answer 2

这正则就是匹配这个字符串："data:image/" + ("png"或者"jpg") + ";base64,"

Answer 3

就是去掉base64前面的格式，意思和上面那位一样

Answer 4

将data:image/png;base64,或者data:image/jpg;base64,替换为空字符串