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/statements/do...while/index.html | 98 ++++++++++++++++++++++ 1 file changed, 98 insertions(+) create mode 100644 files/vi/web/javascript/reference/statements/do...while/index.html (limited to 'files/vi/web/javascript/reference/statements/do...while/index.html') diff --git a/files/vi/web/javascript/reference/statements/do...while/index.html b/files/vi/web/javascript/reference/statements/do...while/index.html new file mode 100644 index 0000000000..eef8cf1f08 --- /dev/null +++ b/files/vi/web/javascript/reference/statements/do...while/index.html @@ -0,0 +1,98 @@ +--- +title: do...while +slug: Web/JavaScript/Reference/Statements/do...while +translation_of: Web/JavaScript/Reference/Statements/do...while +--- +
{{jsSidebar("Statements")}}
+ +

Vòng lặp do...while tạo ra vòng lặp thực thi các câu lệnh bên trong nó đến khi điều kiện không còn thoả mãn nữa. Điều kiện của vòng lặp sẽ được kiểm tra sau thực thi các câu lệnh, các câu lệnh của vòng lặp sẽ được thực thi ít nhất một lần.

+ +
{{EmbedInteractiveExample("pages/js/statement-dowhile.html")}}
+ + + +

Cú pháp

+ +
do
+   // các câu lệnh
+while (// điều kiện);
+
+ +
+
statement
+
A statement that is executed at least once and is re-executed each time the condition evaluates to true. To execute multiple statements within the loop, use a {{jsxref("Statements/block", "block")}} statement ({ ... }) to group those statements.
+
+ +
+
condition
+
An expression evaluated after each pass through the loop. If condition evaluates to true, the statement is re-executed. When condition evaluates to false, control passes to the statement following the do...while.
+
+ +

Examples

+ +

Using do...while

+ +

In the following example, the do...while loop iterates at least once and reiterates until i is no longer less than 5.

+ +

HTML content

+ +
<div id="example"></div>
+ +

JavaScript content

+ +
var result = '';
+var i = 0;
+do {
+   i += 1;
+   result += i + ' ';
+} while (i < 5);
+document.getElementById('example').innerHTML = result;
+ +

Result

+ +

{{ EmbedLiveSample('Examples') }}

+ +

Specifications

+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
SpecificationStatusComment
{{SpecName('ES3')}}{{Spec2('ES3')}}Initial definition. Implemented in JavaScript 1.2
{{SpecName('ES5.1', '#sec-12.6.1', 'do-while statement')}}{{Spec2('ES5.1')}}
{{SpecName('ES6', '#sec-do-while-statement', 'do-while statement')}}{{Spec2('ES6')}}Trailing ; is now optional.
{{SpecName('ESDraft', '#sec-do-while-statement', 'do-while statement')}}{{Spec2('ESDraft')}}
+ +

Browser compatibility

+ + + +

{{Compat("javascript.statements.do_while")}}

+ +

See also

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