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The syntax of JavaScript is the set of rules that define a correctly structured JavaScript program. The examples below make use of the log function of the console object present in most browsers for standard text output . The JavaScript standard library lacks an official standard text output function (with the exception of document.write ).
A contract is an agreement enforceable by law. A void agreement is one which cannot be enforced by law. Sometimes an agreement which is enforceable by law, i.e., a contract, can become void. Void agreements are different from voidable contracts, which are contracts that may be nullified. However, when a contract is being written and signed ...
An alternative definition for "weakly typed" refers to languages, such as Perl, Ring and JavaScript, which permit a large number of implicit type conversions. In JavaScript, for example, the expression 2 * x implicitly converts x to a number, and this conversion succeeds even if x is null, undefined, an Array, or a string of letters. Such ...
The void type, in several programming languages derived from C and Algol68, is the return type of a function that returns normally, but does not provide a result value to its caller. Usually such functions are called for their side effects, such as performing some task or writing to their output parameters. The usage of the void type in such ...
The void ratio ( ) of a mixture of solids and fluids (gases and liquids), or of a porous composite material such as concrete, is the ratio of the volume of the voids ( ) filled by the fluids to the volume of all the solids ( ). It is a dimensionless quantity in materials science and in soil science, and is closely related to the porosity (often ...
A callback is often back on the level of the original caller. In computer programming, a callback is a function that is stored as data (a reference) and designed to be called by another function – often back to the original abstraction layer . A function that accepts a callback parameter may be designed to call back before returning to its ...
Async/await. In computer programming, the async/await pattern is a syntactic feature of many programming languages that allows an asynchronous, non-blocking function to be structured in a way similar to an ordinary synchronous function. It is semantically related to the concept of a coroutine and is often implemented using similar techniques ...
Some elements, the so-called void elements, do not have an end tag. A typical example is the <br> (hard line-break) element. A void element's behavior is predefined, and it cannot contain any content or other elements. For example, an address would be written as: <