JavaScript Basics: Difference between revisions
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== Types == | == Types == | ||
<code>string</code>, <code>number</code>, <code>boolean</code>, <code>null</code>, <code>undefined</code>, <code>object</code> | The built-in types are <code>string</code>, <code>number</code>, <code>boolean</code>, <code>null</code>, <code>undefined</code>, <code>object</code>. | ||
Use <code>typeof some_var</code> to get the type. | Use <code>typeof some_var</code> to get the type. | ||
The following are considered false: <code>false</code>, <code>0</code>, <code>""</code>, <code>null</code>, <code>undefined</code>, <code>NaN</code> | The following are considered false: <code>false</code>, <code>0</code>, <code>""</code>, <code>null</code>, <code>undefined</code>, <code>NaN</code>. | ||
Revision as of 16:41, 18 April 2015
Link to external Javscript file
<head>
<title>Test</title>
<meta http-equiv="content-type" content="text/html;charset=utf-8" />
<script src="spectra.js" type="text/javascript" ></script>
</head>
Types
The built-in types are string, number, boolean, null, undefined, object.
Use typeof some_var to get the type.
The following are considered false: false, 0, "", null, undefined, NaN.