????? ?? JavaScript? ?? MIME ??? ???? ??
JavaScript? ???? ????? ?? FileReader? ???? ??? MIME ??? ??? ? ????. ???. ??? ??? ????? ?????? ??? ??? ?????. ??? ???????.
1??: ?? ?? ??
?? ??? ??:
// Retrieve file information
var files = document.getElementById("your-files").files;
2??: ???? MIME ?? ??
?? ??:
?? MIME? ???? Blob ??:
console.log(files[i].type); // Outputs "image/jpeg" or similar
??? ?? ?? ??:
?? ???? ??? ?? ??? ??? "??? ??"? ?????:
var blob = files[i]; // File object
var fileReader = new FileReader();
fileReader.onloadend = function(e) {
var arr = (new Uint8Array(e.target.result)).subarray(0, 4);
var header = "";
for(var i = 0; i < arr.length; i++) {
header += arr[i].toString(16);
}
console.log(header);
// Check the file signature against known types
};
fileReader.readAsArrayBuffer(blob); ?? MIME ?? ??:
switch (header) {
case "89504e47":
type = "image/png";
break;
case "47494638":
type = "image/gif";
break;
case "ffd8ffe0":
case "ffd8ffe1":
case "ffd8ffe2":
case "ffd8ffe3":
case "ffd8ffe8":
type = "image/jpeg";
break;
default:
type = "unknown";
break;
}
??? ??? ???? ??? ??? ????? ?? ????? ??? MIME ??? ??? ??? ? ?? ???? ?? ??? ???? ?? ? ????.
? ??? ????? ?? JavaScript?? ??? MIME ??? ??? ??? ? ?????? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!
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Undress AI Tool
??? ???? ??
Undresser.AI Undress
???? ?? ??? ??? ?? AI ?? ?
AI Clothes Remover
???? ?? ???? ??? AI ?????.
Clothoff.io
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Video Face Swap
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