JavaScript:function

code:js

function name(parameter1, parameter2, parameter3) {

// what the function does

}

Outputting Data

alert()

Output data in an alert box in the browser window

confirm()

Opens up a yes/no dialog and returns true/false depending on user click

console.log()

Writes information to the browser console, good for debugging purposes

document.write()

Write directly to the HTML document

prompt()

Creates an dialogue for user input

Global Functions

decodeURI()

Decodes a Uniform Resource Identifier (URI) created by encodeURI or similar

decodeURIComponent()

Decodes a URI component

encodeURI()

Encodes a URI into UTF-8

encodeURIComponent()

Same but for URI components

eval()

Evaluates JavaScript code represented as a string

isFinite()

Determines whether a passed value is a finite number

isNaN()

Determines whether a value is NaN or not

Number()

Returns a number converted from its argument

parseFloat()

Parses an argument and returns a floating point number

parseInt()

Parses its argument and returns an integer

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