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30 result(s) for “if com site www log gov site www post com site:developer.mozilla.org” of 263 matched · page 2 · 1280 ms
Scope: Nishi’s own index (our crawl + Common Crawl) — not the whole live web. Some sites block all automated crawlers (anti-bot walls), so their pages may be absent here even though we never filter lawful content.
Freshness: no result on this page carries a fetch time yet (indexed before the fetch epoch was stored beside the doc)
https://developer.mozilla.org/en-US/docs/Web/API/CSSFontFeatureValuesMap
get()
Returns value corresponding to the key in this CSSFontFeatureValuesMap, or undefined if there is none
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/for
If this expression evaluates to true, statement is executed
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/var
log(x); // 1 (function `bar` closes over `x`)
console
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/yield*
If the iterator result has done: true, then the yield* expression stops executing and returns the value of that result
https://developer.mozilla.org/de/docs/Web/JavaScript/Reference/Global_Objects/Array/find
log(result); // { name: 'cherries', quantity: 5 }
Die erste Primzahl in einem Array finden
Das folgende Beispiel gibt das erste Element im Array zurück, das eine Primzahl ist, oder undefined, wenn es keine Primzahl gibt
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/block
Combining statements into blocks is a common practice in JavaScript, especially when used in association with control flow statements like if
https://developer.mozilla.org/de/docs/Web/JavaScript/Reference/Operators/function
log(notHoisted); // undefined
// Even though the variable name is hoisted,
// the definition isn't
https://developer.mozilla.org/de/docs/Web/JavaScript/Reference/Global_Objects/Object/isPrototypeOf
prototype in seiner Prototypenkette hat, können Sie dies tun:
js
if (Foo
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes/constructor
log(new ChildClass()); // TypeError: Derived constructors may only return object or undefined
If the parent class constructor returns an object, that object will be used as the this value on which class fields of the derived class will be defined
https://developer.mozilla.org/de/docs/Web/JavaScript/Reference/Statements/var
log(x); // 1 (function `bar` closes over `x`)
console
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray
, Int8Array), an array buffer is created internally in memory or, if an ArrayBuffer object is given as constructor argument, that ArrayBuffer is used instead
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/break
If the break statement is not nested within a loop or switch, then the label identifier is required
https://developer.mozilla.org/de/docs/Web/JavaScript/Reference/Global_Objects/Object/assign
log(copy); // { a: 1 }
Warnung bei tiefem Klonen
Für tiefes Klonen müssen wir Alternativen wie structuredClone() verwenden, da Object
https://developer.mozilla.org/de/docs/Web/JavaScript/Reference/Statements/for
log(i);
}
// SyntaxError: 'for-in' loop variable declaration may not have an initializer
https://developer.mozilla.org/de/docs/Web/JavaScript/Reference/Classes/constructor
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https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/yield
If an optional value is passed to the generator's next() method, that value becomes the value returned by the generator's current yield operation
https://developer.mozilla.org/en-US/docs/Web/API/CSSFontFaceDescriptors
querySelector("#log");
function log(text) {
logElement
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String
log(`${a} is less than ${b}`);
} else if (a > b) {
console
https://developer.mozilla.org/de/docs/Web/JavaScript/Reference/Global_Objects/Array/indexOf
log(`New veggies collection is: ${veggies}`);
} else {
console
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Control_flow_and_error_handling
log(x); // 2
This outputs 2 because the var x statement within the block is in the same scope as the var x statement before the block
https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/Infinity
log(Infinity + 1); /* Infinity */
console
https://developer.mozilla.org/de/docs/Web/JavaScript/Reference/Statements/block
Das Kombinieren von Anweisungen zu Blöcken ist eine gängige Praxis in JavaScript, insbesondere in Verbindung mit Kontrollflussanweisungen wie if
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Language_overview
log(-3n / 2n); // -1n
The standard arithmetic operators are supported, including addition, subtraction, remainder arithmetic, etc
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/NaN
NaN's behaviors include:
If NaN is involved in a mathematical operation (but not bitwise operations), the result is usually also NaN
https://developer.mozilla.org/de/docs/Web/JavaScript/Reference/Global_Objects/String
log(`${a} is less than ${b}`);
} else if (a > b) {
console
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes/Public_class_fields
log(new C());
// Both instances have the same field name
In the field initializer, this refers to the class instance under construction, and super refers to the prototype property of the base class, which contains the base class's instance methods, but not its instance fields
https://developer.mozilla.org/en-US/docs/Web/API/CSSMathMax
If all arguments are absolute values, such as pixel lengths, max() is resolved to a single value at parse time, represented by the CSS Typed Object Model as a CSSUnitValue
https://developer.mozilla.org/en-US/docs/Web/API/CSSMathMin
If all arguments are absolute values, such as pixel lengths, min() is resolved to a single value at parse time, represented by the CSS Typed Object Model as a CSSUnitValue
https://developer.mozilla.org/ja/docs/Web/JavaScript/Reference/Global_Objects/Infinity
log(Infinity + 1); /* Infinity */
console
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Equality
This can be roughly summarized as follows:
If the operands have the same type, they are compared as follows:
Object: return true only if both operands reference the same object