我使用AJAX2這裏沒有足夠的論據XMLHttpRequest.open
描述監控Ajax請求的進步,但我收到以下錯誤「類型錯誤:沒有足夠的論據來XMLHttpRequest.open。 「
任何人都可以幫助爲什麼這個錯誤發生?
我的代碼是:
var oReq = new XMLHttpRequest();
oReq.addEventListener("progress", updateProgress);
oReq.addEventListener("load", transferComplete);
oReq.addEventListener("error", transferFailed);
oReq.addEventListener("abort", transferCanceled);
oReq.open();
// ...
// progress on transfers from the server to the client (downloads)
function updateProgress (oEvent) {
if (oEvent.lengthComputable) {
var percentComplete = oEvent.loaded/oEvent.total;
console.log(percentComplete+ " percent completed.");
// ...
} else {
console.log(" Unable to compute progress information since the total size is unknown.");
// Unable to compute progress information since the total size is unknown
}
}
function transferComplete(evt) {
console.log("The transfer is complete.");
}
function transferFailed(evt) {
console.log("An error occurred while transferring the file.");
}
function transferCanceled(evt) {
console.log("The transfer has been canceled by the user.");
}
實際工作中的錯誤是在這條線
oReq.open();
哪裏是代碼? – binariedMe