javascript is null shorthand

Must read for any serious JavaScript based developer. you may want to ensur...

Must read for any serious JavaScript based developer. you may want to ensure that the source variable is not null, undefined or empty.

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The JavaScript equivalent of the C# null coalescing operator (??) the gener...

The JavaScript equivalent of the C# null coalescing operator (??) the general, terse way of assigning default/alternative values in JavaScript.

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In this case, the code assigns 12 to hrs if hrs = 0 (as JavaScript to the v...

In this case, the code assigns 12 to hrs if hrs = 0 (as JavaScript to the variable if the former value evaluates to 0, the empty string, null.

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fn == "function") return fn(args); }. (using ES6 rest & sprea...

fn == "function") return fn(args); }. (using ES6 rest & spread syntax, in ES5 it would be dwn.220.v.ua(null, dwn.220.v.ua(arguments, 1)).

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Null, Undefined, Empty Checks Shorthand. When creating new I would say this...

Null, Undefined, Empty Checks Shorthand. When creating new I would say this is a very common check for JavaScript coders. Longhand.

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false; 0; null; undefined; empty string. Otherwise it will be set to the va...

false; 0; null; undefined; empty string. Otherwise it will be set to the value of the right operand. So this isn't the right thing to use if you need to explicitly set the.

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Instead of using the ternary operator to handle a null value and set the de...

Instead of using the ternary operator to handle a null value and set the default values, you can use the '||' operator.

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Checking for Undefined, Null, and Empty Variables in JavaScript Feb There a...

Checking for Undefined, Null, and Empty Variables in JavaScript Feb There are various times during the execution of scripts when a variable may not be defined, it may be null, or it might be an empty string. .. Shorthand.

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JavaScript Shorthand Coding Techniques . var a; // a = undefined // if fals...

JavaScript Shorthand Coding Techniques . var a; // a = undefined // if falsy (i.e. if false, 0, "", '', null, undefined, NaN) if(!a) { // do something }.

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The conditional (ternary) operator is the only JavaScript operator that tak...

The conditional (ternary) operator is the only JavaScript operator that takes three operands. This operator is frequently used as a shortcut for.

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If true else Shorthand; Null, Undefined, Empty Checks Shorthand; Object Fun...

If true else Shorthand; Null, Undefined, Empty Checks Shorthand; Object Function Variable Arguments Shorthand; JavaScript foreach Loop Shorthand.

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JavaScript shorthand techniques will help you speed up your coding. if the ...

JavaScript shorthand techniques will help you speed up your coding. if the variable your referencing for it's value isn't null or undefined.

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Shorthand property names (ES) var a = 'foo', b = 42, c = {}; var ...

Shorthand property names (ES) var a = 'foo', b = 42, c = {}; var o = {a, b, . Instead, if the provided value is an object or null, it changes the.

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Like many other languages Javascript's && and || operators �...

Like many other languages Javascript's && and || operators 'default value' in case textValue is undefined or null, and avoids writing oObject.

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I just came across this really awesome Javascript "shorthand". no...

I just came across this really awesome Javascript "shorthand". not exist and results in a NULL, then the IF statement will fail and the AND'd.

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