A piece of information in JavaScript is a value. There are different kinds of values, for example numbers or string. A string value is a word or words enclosed in quotation marks.
Variables contain values. For example variable siteName is assigned the string ‘HTMLcenter’. Another way to express is siteName = HTMLcenter, where the equals means ‘set to’, the variable siteName now contains the value HTMLcenter.
Keep in mind that JavaScript is case sensitive. Variable MyName is not the same as myName or myname. Variables can not contain spaces and you shouldn’t choose one of the JavaScript reserved words as name for a variable.
| Values | ||
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Number String Boolean Null Object Function
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Any numeric value Characters in quotes True or False Empty / No meaning Any value associated with an object Value returned by a function
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EXAMPLES 1.23456789 “Hi, HTMLcenter!” False
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