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<html><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Keywords" name="Keywords"content="JavaScript, examples, JavaScript: The Definitive Guide"><title>Example 15-10 from JavaScript: The Definitive Guide, Fifth Edition</title><style>body { font-family: arial, sans-serif}.lefttitle { font: bold x-small arial, sans-serif; margin: 5px; letter-spacing: .15em; text-transform:uppercase;}.leftcaption { font: italic x-small sans-serif; margin-bottom: 20px;}#banner { font-family:sans-serif; color:#333; font-size:x-large; font-weight:normal; padding:15px; padding-top: 3px; border-bottom:4px double #666;}#banner h1 { font-size: x-large; margin: 0px; padding: 0px;}#banner .description { font-size:large; margin-left: 2px;}pre { border: solid black 1px; background-color: #ddd; padding: 10px; margin: 0px;} </style></script></head><body><div id="banner"><h1>davidflanagan.com/javascript5</h1><span class="description">Example 15-10 from<i>JavaScript: The Definitive Guide, Fifth Edition</i></span></div><div style="float: left; 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text-align: right"><a href="index.html" tppabs="http://www.davidflanagan.com/javascript5/index.html">Table of Examples</a></div><pre>/** * make(tagname, attributes, children): * create an HTML element with specified tagname, attributes and children. * * The attributes argument is a JavaScript object: the names and values of its * properties are taken as the names and values of the attributes to set. * If attributes is null, and children is an array or a string, the attributes * can be omitted altogether and the children passed as the second argument. * * The children argument is normally an array of children to be added to * the created element. If there are no children, this argument can be * omitted. If there is only a single child, it can be passed directly * instead of being enclosed in an array. (But if the child is not a string * and no attributes are specified, an array must be used.) * * Example: make("p", ["This is a ", make("b", "bold"), " word."]); * * Inspired by the MochiKit library (http://mochikit.com) by Bob Ippolito */function make(tagname, attributes, children) { // If we were invoked with two arguments the attributes argument is // an array or string, it should really be the children arguments. if (arguments.length == 2 && (attributes instanceof Array || typeof attributes == "string")) { children = attributes; attributes = null; } // Create the element var e = document.createElement(tagname); // Set attributes if (attributes) { for(var name in attributes) e.setAttribute(name, attributes[name]); } // Add children, if any were specified. if (children != null) { if (children instanceof Array) { // If it really is an array for(var i = 0; i < children.length; i++) { // Loop through kids var child = children[i]; if (typeof child == "string") // Handle text nodes child = document.createTextNode(child); e.appendChild(child); // Assume anything else is a Node } } else if (typeof children == "string") // Handle single text child e.appendChild(document.createTextNode(children)); else e.appendChild(children); // Handle any other single child } // Finally, return the element. return e;}/** * maker(tagname): return a function that calls make() for the specified tag. * Example: var table = maker("table"), tr = maker("tr"), td = maker("td"); */function maker(tag) { return function(attrs, kids) { if (arguments.length == 1) return make(tag, attrs); else return make(tag, attrs, kids); }}</pre><div class="lefttitle" style="padding:0px; text-align: right"><a href="index.html" tppabs="http://www.davidflanagan.com/javascript5/index.html">Table of Examples</a></div><p><script type="text/javascript">amazon_ad_tag="davidflanagancom"; amazon_ad_width="300"; amazon_ad_height="250"; amazon_ad_logo="hide";</script><script type="text/javascript" src="../../www.assoc-amazon.com/s/ads.js" tppabs="http://www.assoc-amazon.com/s/ads.js"></script></div></body></html>?? 快捷鍵說明
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