From 218934fa2ed1c702a6d3923d2aa2cc6b43c48684 Mon Sep 17 00:00:00 2001 From: Peter Bengtsson Date: Tue, 8 Dec 2020 14:43:23 -0500 Subject: initial commit --- .../reference/global_objects/set/delete/index.html | 98 ++++++++++++++++++++++ 1 file changed, 98 insertions(+) create mode 100644 files/zh-tw/web/javascript/reference/global_objects/set/delete/index.html (limited to 'files/zh-tw/web/javascript/reference/global_objects/set/delete') diff --git a/files/zh-tw/web/javascript/reference/global_objects/set/delete/index.html b/files/zh-tw/web/javascript/reference/global_objects/set/delete/index.html new file mode 100644 index 0000000000..d465f45bef --- /dev/null +++ b/files/zh-tw/web/javascript/reference/global_objects/set/delete/index.html @@ -0,0 +1,98 @@ +--- +title: Set.prototype.delete() +slug: Web/JavaScript/Reference/Global_Objects/Set/delete +tags: + - ECMAScript 2015 + - JavaScript + - 原型 + - 參考 + - 方法 + - 集合 +translation_of: Web/JavaScript/Reference/Global_Objects/Set/delete +--- +
{{JSRef}}
+ +

delete() 方法會一個 Set 物件中移除指定元素。

+ +
{{EmbedInteractiveExample("pages/js/set-prototype-delete.html")}}
+ + + +

語法

+ +
mySet.delete(value);
+ +

參數'

+ +
+
value
+
要從 Set 物件中移除的值。
+
+ +

回傳值

+ +

true 如果成功從 Set 物件中移除;反之 false

+ +

範例

+ +

使用 delete 方法

+ +
var mySet = new Set();
+mySet.add('foo');
+
+mySet.delete('bar'); // Returns false. No "bar" element found to be deleted.
+mySet.delete('foo'); // Returns true.  Successfully removed.
+
+mySet.has('foo');    // Returns false. The "foo" element is no longer present.
+
+ +

下方展示了如何從一個 Set 中移除物件。

+ +
var setObj = new Set(); // Create a New Set.
+
+setObj.add({x: 10, y: 20}); // Add object in the set.
+
+setObj.add({x: 20, y: 30}); // Add object in the set.
+
+// Delete any point with `x > 10`.
+setObj.forEach(function(point){
+  if(point.x > 10){
+    setObj.delete(point)
+  }
+})
+
+ +

規範

+ + + + + + + + + + + + + + + + + + + +
規範狀態
{{SpecName('ES2015', '#sec-set.prototype.delete', 'Set.prototype.delete')}}{{Spec2('ES2015')}}Initial definition.
{{SpecName('ESDraft', '#sec-set.prototype.delete', 'Set.prototype.delete')}}{{Spec2('ESDraft')}} 
+ +

瀏覽器相容性

+ + + +

{{Compat("javascript.builtins.Set.delete")}}

+ +

另見

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