From 218934fa2ed1c702a6d3923d2aa2cc6b43c48684 Mon Sep 17 00:00:00 2001 From: Peter Bengtsson Date: Tue, 8 Dec 2020 14:43:23 -0500 Subject: initial commit --- files/zh-tw/web/api/progressevent/index.html | 161 +++++++++++++++++++++++++++ 1 file changed, 161 insertions(+) create mode 100644 files/zh-tw/web/api/progressevent/index.html (limited to 'files/zh-tw/web/api/progressevent/index.html') diff --git a/files/zh-tw/web/api/progressevent/index.html b/files/zh-tw/web/api/progressevent/index.html new file mode 100644 index 0000000000..250df9b338 --- /dev/null +++ b/files/zh-tw/web/api/progressevent/index.html @@ -0,0 +1,161 @@ +--- +title: ProgressEvent +slug: Web/API/ProgressEvent +translation_of: Web/API/ProgressEvent +--- +

{{APIRef("DOM Events")}}

+ +

The ProgressEvent interface represents events measuring progress of an underlying process, like an HTTP request (for an XMLHttpRequest, or the loading of the underlying resource of an {{HTMLElement("img")}}, {{HTMLElement("audio")}}, {{HTMLElement("video")}}, {{HTMLElement("style")}} or {{HTMLElement("link")}}).

+ +

建構式

+ +
+
{{domxref("ProgressEvent.ProgressEvent", "ProgressEvent()")}}
+
Creates a ProgressEvent event with the given parameters.
+
+ +

屬性

+ +

Also inherits properties from its parent {{domxref("Event")}}.

+ +
+
{{domxref("ProgressEvent.lengthComputable")}} {{readonlyInline}}
+
Is a {{domxref("Boolean")}} flag indicating if the total work to be done, and the amount of work already done, by the underlying process is calculable. In other words, it tells if the progress is measurable or not.
+
{{domxref("ProgressEvent.loaded")}} {{readonlyInline}}
+
Is an unsigned long long representing the amount of work already performed by the underlying process. The ratio of work done can be calculated with the property and ProgressEvent.total. When downloading a resource using HTTP, this only represent the part of the content itself, not headers and other overhead.
+
{{domxref("ProgressEvent.total")}} {{readonlyInline}}
+
Is an unsigned long long representing the total amount of work that the underlying process is in the progress of performing. When downloading a resource using HTTP, this only represent the content itself, not headers and other overhead.
+
+ +

方法

+ +
+
+ +

Also inherits methods from its parent {{domxref("Event")}}.

+ +
+
{{domxref("ProgressEvent.initProgressEvent()")}} {{deprecated_inline}}{{non-Standard_inline}}
+
Initializes a ProgressEvent created using the deprecated {{domxref("Document.createEvent()", "Document.createEvent(\"ProgressEvent\")")}} method.
+
+ +

範例

+ +

The following example adds a ProgressEvent to a new {{domxref("XMLHTTPRequest")}} and uses it to display the status of the request.

+ +
  var progressBar = document.getElementById("p"),
+      client = new XMLHttpRequest()
+  client.open("GET", "magical-unicorns")
+  client.onprogress = function(pe) {
+    if(pe.lengthComputable) {
+      progressBar.max = pe.total
+      progressBar.value = pe.loaded
+    }
+  }
+  client.onloadend = function(pe) {
+    progressBar.value = pe.loaded
+  }
+  client.send()
+ +

規格

+ + + + + + + + + + + + + + +
SpecificationStatusComment
{{SpecName('Progress Events', '#interface-progressevent', 'ProgressEvent')}}{{Spec2('Progress Events')}}Initial definition.
+ +

瀏覽器相容性

+ +

{{CompatibilityTable}}

+ +
+ + + + + + + + + + + + + + + + + + + + + + + + + + + +
FeatureChromeFirefox (Gecko)Internet ExplorerOperaSafari
Basic support1.0{{CompatGeckoDesktop("1.9.1")}}10.0{{CompatVersionUnknown}}{{CompatVersionUnknown}}
initProgressEvent() {{non-standard_inline}}{{deprecated_inline}}{{CompatNo}}[1]{{CompatNo}}[2]10.0{{CompatNo}}[4]{{CompatNo}}[3]
+
+ +
+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
FeatureAndroidAndroid WebviewFirefox Mobile (Gecko)IE MobileOpera MobileSafari MobileChrome for Android
Basic support{{CompatVersionUnknown}}{{CompatVersionUnknown}}{{CompatGeckoMobile("1.9.1")}}10.0{{CompatVersionUnknown}}{{CompatVersionUnknown}}{{CompatVersionUnknown}}
initProgressEvent() {{non-standard_inline}}{{deprecated_inline}}{{CompatNo}}[3]{{CompatNo}}{{CompatNo}}[2]10.0{{CompatNo}}[4]{{CompatNo}}[3]{{CompatNo}}
+
+ +

[1] This feature was implemented in Chrome 1.0, but removed in Chrome 17.0.

+ +

[2] This feature was implemented in Gecko 1.9.1 {{geckoRelease("1.9.1")}}, but removed in Gecko 22 {{geckoRelease("22")}}.

+ +

[3] This feature was removed at some point.

+ +

[4] This feature was removed in Opera 15.0.

+ +

參見

+ + -- cgit v1.2.3-54-g00ecf