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  1. Multiplication assignment (*=) - JavaScript | MDN

    The multiplication assignment (*=) operator performs multiplication on the two operands and assigns the result to the left operand.... Try it Syntax js x *= y Description x *= y is...Multiplication assignment using numbers js let bar = 5; bar *= 2; // 10...

    developer.mozilla.org/en-US/docs/Web/JavaScript...
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  2. Logical AND (&&) - JavaScript | MDN

    The logical AND (&&) (logical conjunction) operator for a set of boolean operands will be true if and only if all the operands are true. Otherwise it will be false.... Try it Syntax js x && y Description Logical AND...and returns them as they are: js result = "" && "foo"; // result...

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  3. Logical OR (||) - JavaScript | MDN

    The logical OR (||) (logical disjunction) operator for a set of operands is true if and only if one or more of its operands is true. It is typically used with boolean (logical) values. When it is, it returns a Boolean value. However, the || operator actually returns the value of one of the specified operands, so if this operator is used with non-Boolean values, it will return a non-Boolean value.... Try it Syntax js x || y Description If x can be...the first operand. See example: js function A() { console.log("called...

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  4. Inequality (!=) - JavaScript | MDN

    The inequality (!=) operator checks whether its two operands are not equal, returning a Boolean result. Unlike the strict inequality operator, it attempts to convert and compare operands that are of different types.... Try it Syntax js x != y Description The inequality...always give the same result: js x != y; !(x == y); For details...

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  5. Indexed collections - JavaScript | MDN

    This chapter introduces collections of data which are ordered by an index value. This includes arrays and array-like constructs such as Array objects and TypedArray objects....statements create equivalent arrays: js const arr1 = new Array(element0...of the following can be used: js // This... const arr1 = new Array(arrayLength);...

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  6. in - JavaScript | MDN

    The in operator returns true if the specified property is in the specified object or its prototype chain.... Try it Syntax js prop in object #prop in object...syntax allows you to shorten: js class C { #x; static isC(obj)...

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  7. SyntaxError: missing ) after condition - JavaSc...

    The JavaScript exception "missing ) after condition" occurs when there is an error with how an if condition is written. It must appear in parenthesis after the if keyword....after the if keyword, like this: js if (condition) { // do something...you parenthesis in your code. js if (Math.PI < 3 { console.log("wait...

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  8. throw - JavaScript | MDN

    The throw statement throws a user-defined exception. Execution of the current function will stop (the statements after throw won't be executed), and control will be passed to the first catch block in the call stack. If no catch block exists among caller functions, the program will terminate.... Try it Syntax js throw expression; expression...kind of expression, for example: js throw error; // Throws a previously...

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  9. Subtraction (-) - JavaScript | MDN

    The subtraction (-) operator subtracts the two operands, producing their difference.... Try it Syntax js x - y Description The - operator...Examples Subtraction using numbers js 5 - 3; // 2 3 - 5; // -2 Other...

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  10. GitHub - mdn/bob: Builder of Bits aka The MDN W...

    Builder of Bits aka The MDN Web Docs interactive examples, example builder - mdn/bob...js webpack.config.js View all files Repository...examples editor |--> css |--> js |--> media # media used only...

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