JavaScript生成xml

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function XMLWriter() 
{ 
    this.XML=[]; 
    this.Nodes=[]; 
    this.State=""; 
    this.FormatXML = function(Str) 
    { 
        if (Str) 
            return Str.replace(/&/g, "&amp;").replace(/\"/g, "&quot;").replace(/</g, "&lt;").replace(/>/g, "&gt;"); 
        return "" 
    } 
    this.BeginNode = function(Name) 
    { 
        if (!Name) return; 
        if (this.State=="beg") this.XML.push(">"); 
        this.State="beg"; 
        this.Nodes.push(Name); 
        this.XML.push("<"+Name); 
    } 
    this.EndNode = function() 
    { 
        if (this.State=="beg") 
        { 
            this.XML.push("/>"); 
            this.Nodes.pop(); 
        } 
        else if (this.Nodes.length>0) 
            this.XML.push("</"+this.Nodes.pop()+">"); 
        this.State=""; 
    } 
    this.Attrib = function(Name, Value) 
    { 
        if (this.State!="beg" || !Name) return; 
        this.XML.push(" "+Name+"=\""+this.FormatXML(Value)+"\""); 
    } 
    this.WriteString = function(Value) 
    { 
        if (this.State=="beg") this.XML.push(">"); 
        this.XML.push(this.FormatXML(Value)); 
        this.State=""; 
    } 
    this.Node = function(Name, Value) 
    { 
        if (!Name) return; 
        if (this.State=="beg") this.XML.push(">"); 
        this.XML.push((Value=="" || !Value)?"<"+Name+"/>":"<"+Name+">"+this.FormatXML(Value)+"</"+Name+">"); 
        this.State=""; 
    } 
    this.Close = function() 
    { 
        while (this.Nodes.length>0) 
            this.EndNode(); 
        this.State="closed"; 
    } 
    this.ToString = function(){return this.XML.join("");} 
} 

XMLWriter 有以下几个方法:

BeginNode (Name)
EndNode ()
Attrib (Name, Value)
WriteString (Value)
Node (Name, Value)
Close ()
ToString ()
BeginNode 输出一个标签：

XML.BeginNode(“Foo”);

XML.BeginNode(“Foo”);
XML.Attrib(“Bar”, “Some Value”);

WriteString 方法：

XML.Node(“MyNode”, “My Value”);
//Produces: <MyNode>My Value</MyNode>

XML.BeginNode(“Foo”);
XML.WriteString(“Hello World”);
XML.EndNode();
//Produces <Foo>Hello World</Foo>

Node 方法：
XML.EndNode();
//Produces: <Foo Bar=”Some Value” />

eg:

复制代码代码如下:

function WriteTest() 
        { 
            try 
            { 
                var XML=new XMLWriter(); 
                XML.BeginNode("Example"); 
                XML.Attrib("SomeAttribute", "And Some Value"); 
                XML.Attrib("AnotherAttrib", "..."); 
                XML.WriteString("This is an example of the JS XML WriteString method."); 
                XML.Node("Name", "Value"); 
                XML.BeginNode("SubNode"); 
                XML.BeginNode("SubNode2"); 
                XML.EndNode(); 
                XML.BeginNode("SubNode3"); 
                XML.WriteString("Blah blah."); 
                XML.EndNode(); 
                XML.Close(); // Takes care of unended tags. 
                // The replace in the following line are only for making the XML look prettier in the textarea. 
                document.getElementById("ExampleOutput").value=XML.ToString().replace(/</g,"\n<"); 
            } 
            catch(Err) 
            { 
                alert("Error: " + Err.description); 
            } 
            return false; 
        }
 

生成的xml为：

<Example SomeAttribute="And Some Value" AnotherAttrib="...">This is an example of the JS XML WriteString method.
<Name>Value
</Name>
<SubNode>
<SubNode2/>
<SubNode3>Blah blah.
</SubNode3>
</SubNode>
</Example>