IMG zu UTF-8 oder ISO
- Ersteller methosiea
- Erstellt am
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UTF-8 und ISO sind Charsets. Was du wahrscheinlich meinst, ist Base64 Encoding:
http://www.base64-image.de
http://www.base64-image.de
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Danke, Ich habe nun was gefunden:
-> Direkt eingebaut, jedoch weiss ich nicht, wie ich nun das mit dem IMG bewerkstellige oder wie ich die function aufrufe. :(
Code:
-> Direkt eingebaut, jedoch weiss ich nicht, wie ich nun das mit dem IMG bewerkstellige oder wie ich die function aufrufe. :(
Code:
HTML:
<html>
<head>
<script type="text/javascript">
//Base64
var Base64 = {
// private property
_keyStr : "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",
// public method for encoding
encode : function(input) {
var output = "";
var chr1, chr2, chr3, enc1, enc2, enc3, enc4;
var i = 0;
input = Base64._utf8_encode(input);
while (i < input.length) {
chr1 = input.charCodeAt(i++);
chr2 = input.charCodeAt(i++);
chr3 = input.charCodeAt(i++);
enc1 = chr1 >> 2;
enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
enc4 = chr3 & 63;
if (isNaN(chr2)) {
enc3 = enc4 = 64;
} else if (isNaN(chr3)) {
enc4 = 64;
}
output = output + this._keyStr.charAt(enc1) + this._keyStr.charAt(enc2) + this._keyStr.charAt(enc3) + this._keyStr.charAt(enc4);
}
return output;
},
// public method for decoding
decode : function(input) {
var output = "";
var chr1, chr2, chr3;
var enc1, enc2, enc3, enc4;
var i = 0;
input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
while (i < input.length) {
enc1 = this._keyStr.indexOf(input.charAt(i++));
enc2 = this._keyStr.indexOf(input.charAt(i++));
enc3 = this._keyStr.indexOf(input.charAt(i++));
enc4 = this._keyStr.indexOf(input.charAt(i++));
chr1 = (enc1 << 2) | (enc2 >> 4);
chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
chr3 = ((enc3 & 3) << 6) | enc4;
output = output + String.fromCharCode(chr1);
if (enc3 != 64) {
output = output + String.fromCharCode(chr2);
}
if (enc4 != 64) {
output = output + String.fromCharCode(chr3);
}
}
output = Base64._utf8_decode(output);
return output;
},
// private method for UTF-8 encoding
_utf8_encode : function(string) {
string = string.replace(/\r\n/g, "\n");
var utftext = "";
for (var n = 0; n < string.length; n++) {
var c = string.charCodeAt(n);
if (c < 128) {
utftext += String.fromCharCode(c);
} else if ((c > 127) && (c < 2048)) {
utftext += String.fromCharCode((c >> 6) | 192);
utftext += String.fromCharCode((c & 63) | 128);
} else {
utftext += String.fromCharCode((c >> 12) | 224);
utftext += String.fromCharCode(((c >> 6) & 63) | 128);
utftext += String.fromCharCode((c & 63) | 128);
}
}
return utftext;
},
// private method for UTF-8 decoding
_utf8_decode : function(utftext) {
var string = "";
var i = 0;
var c = c1 = c2 = 0;
while (i < utftext.length) {
c = utftext.charCodeAt(i);
if (c < 128) {
string += String.fromCharCode(c);
i++;
} else if ((c > 191) && (c < 224)) {
c2 = utftext.charCodeAt(i + 1);
string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
i += 2;
} else {
c2 = utftext.charCodeAt(i + 1);
c3 = utftext.charCodeAt(i + 2);
string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
i += 3;
}
}
return string;
}
}
</script>
</head>
<body>
<img src="auto.jpg" id="img" />
</body>
</html>Schau mal, was ich gefunden habe:
http://stackoverflow.com/questions/6150289/how-to-convert-image-into-base64-string-using-javascript
http://stackoverflow.com/questions/6150289/how-to-convert-image-into-base64-string-using-javascript
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Ich hab mir das mal angekuckt überarbeitet und nun ist da irgendwo ein Fehler am Ende:
HTML:
<html>
<head>
<script>
function img_get_base64(url) {
var img = new Image, canvas = document.createElement('canvas'), context = canvas.getContext('2d');
img.crossorigin = 'use-credentials';
img.src = url;
img.onload = function() {
canvas.width = this.width;
canvas.height = this.height;
context.drawImage(this, 0, 0);
alert(canvas.toDataURL());
}
}
img_get_base64('auto.jpg');
</script>
</head>
</html>Werbung:
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