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JavaScript

n.
Java描述語言[一種在HTML上使用的描述語言,能提高HTML的操作能力]

Java描述語言[一種在HTML上使用的描述語言,能提高HTML的操作能力]

The Free On-line Dictionary of Computing (foldoc)

(Formerly "LiveScript") {Netscape}'s simple,
cross-{platform}, {World-Wide Web} {scripting language}, only
very vaguely related to {Java} (which is a {Sun} trademark).
JavaScript is intimately tied to the {World-Wide Web}, and
currently runs in only three environments - as a {server}-side
{scripting} language, as an embedded language in
{server-parsed HTML}, and as an embedded language run in web
{browsers} where it is the most important part of {DHTML}.

JavaScript has a simplified {C}-like {syntax} and is tightly
integrated with the browser {Document Object Model}. It is
useful for implementing enhanced {forms}, simple web
{database} {front-ends}, and navigation enhancements. It is
unusual in that the {scope} of {variables} extends throughout
the function in which they are declared rather than the
smallest enclosing block as in C.

JavaScript originated from {Netscape} and, for a time, only
their products supported it. {Microsoft} now supports a
work-alike which they call JScript. The resulting
inconsistencies make it difficult to write JavaScript that
behaves the same in all browsers. This could be attributed to
the slow progress of JavaScript through the standards bodies.

JavaScript runs "100x" slower than {C}, as it is purely
interpreted ({Java} runs "10x" slower than C code).
{Netscape} and allies say JavaScript is an "open standard" in
an effort to keep {Microsoft} from monopolising web software
as they have desktop software. {Netscape} and {Sun} have
co-operated to enable {Java} and JavaScript to exchange
messages and data.

See also {VBScript}.

{Usenet} newsgroup: {news:comp.lang.javascript}.

Mailing List: ("subscribe javascript"
in body).

(2003-04-28)

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JavaScript	查看　JavaScript　在Google字典中的解釋	Google英翻中〔查看〕
JavaScript	查看　JavaScript　在Yahoo字典中的解釋	Yahoo英翻中〔查看〕

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英文字典中文字典相關資料:

javascript - When should I use ?? (nullish coalescing) vs || (logical . . .
The nullish coalescing operator (??) in JavaScript only considers null or undefined as "nullish" values If the left-hand side is any other value, even falsy values like "" (empty string), 0, or false, it will not use the right-hand side:
What does the !! (double exclamation mark) operator do in JavaScript . . .
Novice JavaScript developers need to know that the "not not" operator is using implicitly the original loose comparison method instead of the exact or operators and also the hidden cast operation that is happening behind the scenes and I show it in the example I provide
Which equals operator (== vs ===) should be used in JavaScript . . .
I'm using JSLint to go through JavaScript, and it's returning many suggestions to replace == (two equals signs) with === (three equals signs) when doing things like comparing idSele_UNVEHtype value
How do you use the ? : (conditional) operator in JavaScript?
27 It's a little hard to google when all you have are symbols ;) The terms to use are "JavaScript conditional operator" If you see any more funny symbols in JavaScript, you should try looking up JavaScript's operators first: Mozilla Developer Center's list of operators The one exception you're likely to encounter is the $ symbol
What is the difference between != and !== operators in JavaScript?
What is the difference between the !== operator and the != operator in JavaScript? Does it behave similarly to the === operator where it compares both value and type?
What does ${} (dollar sign and curly braces) mean in a string in . . .
What does $ {} (dollar sign and curly braces) mean in a string in JavaScript? Asked 10 years ago Modified 2 years, 3 months ago Viewed 430k times
JavaScript OR (||) variable assignment explanation - Stack Overflow
That is, JavaScript "short-circuits" the evaluation of Boolean operators and will return the value associated with either the first non-false variable value or whatever the last variable contains See Anurag's explanation of those values that will evaluate to false Using this technique is not good practice for several reasons; however
Difference between == and === in JavaScript - Stack Overflow
What is the difference between == and === in JavaScript? I have also seen != and !== operators Are there more such operators?
Is there a null coalescing operator in JavaScript?
JavaScript now supports the nullish coalescing operator (??) It returns its right-hand-side operand when its left-hand-side operand is null or undefined, and otherwise returns its left-hand-side operand

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