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var x1 = 0; // A global variable, because it is not in any function let x2 = 0; // Also global, this time because it is not in any block function f {var z = 'foxes', r = 'birds'; // 2 local variables m = 'fish'; // global, because it wasn't declared anywhere before function child {var r = 'monkeys'; // This variable is local and does not affect the "birds" r of the parent function. z ...
hello =-> console. log 'hello, world!' While calling a function can be done with empty parens, hello() , LiveScript treats the exclamation mark as a single-character shorthand for function calls with zero arguments: hello!
A "Hello, World!" program is usually a simple computer program that emits (or displays) to the screen (often the console ) a message similar to "Hello, World!". A small piece of code in most general-purpose programming languages , this program is used to illustrate a language's basic syntax .
Jasmine provides a rich set of built-in matchers. In the above example, toEqual checks the equality between the value returned from the helloWorld() function and the 'Hello world!' string. This is the same as assertions used in other testing frameworks.
The Function constructor can be used to trigger execution of JavaScript code contained in a string as if it were native JavaScript. So, for example, the statement alert(1) is equivalent to Function("alert(1)")().
XULJet was an open-source JavaScript framework for the Mozilla XULRunner run-time environment. It is intended for writing desktop applications in pure JavaScript. XULJet provides a component architecture and user interface elements description inspired by Seaside. It implements some CommonJS specifications. [1]
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To output a 'Hello, world!', A document.write(); function is needed program will also output. If you don't believe me and/or still believe console.log(); works is the only output, try it yourself on W3schools , repl.it , or any other IDE with JavaScript included.