Professional JavaScript for Web Developers 第四版学习笔记 CHAPTER 22:XML in JavaScript
	XML DOM Support in Browsers 849
	DOM Level 2 Core 850
	The DOMParser Type 850
	The XMLSerializer Type 851
	XPath Support in Browsers 852
	DOM Level 3 XPath 852
	Single Node Results 854
	Simple Type Results 854
	Default Type Results 855
	Namespace Support 856
	XSLT Support in Browsers 857
	The XSLTProcessor Type 857
	Using Parameters 858
	Resetting the Processor 859
	Summary 859
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	DOMParser
	parseFromString
	parsererror
---------------------------------------------
	XMLSerializer
	serializeToString
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	let result = xmldom.evaluate("employee/name", xmldom.documentElement, null,
	 XPathResult.ORDERED_NODE_ITERATOR_TYPE, null);
	
	if (result !== null) {
	 let element = result.iterateNext();
	 while(element) {
	  console.log(element.tagName);
	  node = result.iterateNext();
	 }
	}
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XSLTProcessor
 
                