Ajax发送和接收二进制字节流数据的方法
这篇文章主要介绍了Ajax发送和接收二进制字节流数据的方法，非常不错，具有参考借鉴价值，感兴趣的朋友一起看看吧
HTML5 Ajax 2.0标准中，增强了Ajax的许多功能，包括发送FormData数据，上传数据进度条等诸多功能。但实际上，Ajax可以字节发送二进制数据。
发送二进制数据
var oReq = new XMLHttpRequest(); oReq.open("POST", url, true); oReq.onload = function (oEvent) { // Uploaded. }; var blob = new Blob(['abc123'], {type: 'text/plain'}); oReq.send(blob);或者
var myArray = new ArrayBuffer(512); var longInt8View = new Uint8Array(myArray); for (var i=0; i
接收二进制数据
var oReq = new XMLHttpRequest(); oReq.open("GET", "/myfile.png-600", true); oReq.responseType = "arraybuffer"; oReq.onload = function (oEvent) { var arrayBuffer = oReq.response; // Note: not oReq.responseText if (arrayBuffer) { var byteArray = new Uint8Array(arrayBuffer); for (var i = 0; i 当然，如上设置只能是文本类型，如果是Blob类型，那么如下即可
var oReq = new XMLHttpRequest(); oReq.open("GET", "/myfile.png-600", true); oReq.responseType = "arraybuffer"; oReq.onload = function(oEvent) { var blob = new Blob([oReq.response], {type: "image/png"}); // ... }; oReq.send();或者
var oReq = new XMLHttpRequest(); oReq.open("GET", "/myfile.png-600", true); oReq.responseType = "blob"; oReq.onload = function(oEvent) { var blob = oReq.response; // ... }; oReq.send();如果你使用的是旧版本的浏览器，那么加载二进制可以如下
function load_binary_resource(url) { var req = new XMLHttpRequest(); req.open('GET', url, false); //XHR binary charset opt by Marcus Granado 2006 [http://mgran.blogspot.com] req.overrideMimeType('text\/plain; charset=x-user-defined'); req.send(null); if (req.status != 200) return ''; return req.responseText; }注意:x-user-defined告诉浏览器不要解析数据
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