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JS uses ajax to Dynamically Retrieve Data Display from xml files

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JS uses ajax to Dynamically Retrieve Data Display from xml files

This article mainly introduces how JS uses ajax to dynamically obtain data display from xml files. The example shows how javascript uses Ajax to operate XML files, which has some reference value, for more information, see

 

 

This article describes how JS uses ajax to dynamically obtain data display from xml files. Share it with you for your reference. The specific analysis is as follows:

The following JS Code uses ajax to retrieve the content of an xml file and dynamically display it on a webpage.

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<! DOCTYPE html>

<Html>

<Head>

<Script>

Function loadXMLDoc (url)

{

Var xmlhttp;

Var txt, x, xx, I;

If (window. XMLHttpRequest)

{// Code for IE7 +, Firefox, Chrome, Opera, Safari

Xmlhttp = new XMLHttpRequest ();

}

Else

{// Code for IE6, IE5

Xmlhttp = new ActiveXObject ("Microsoft. XMLHTTP ");

}

Xmlhttp. onreadystatechange = function ()

{

If (xmlhttp. readyState = 4 & xmlhttp. status = 200)

{

Txt = "<table border = '1'> <tr> <th> Title </th> <th> Artist </th> </tr> ";

Xforwardedxmlhttp.responsexml.doc umentElement. getElementsByTagName ("CD ");

For (I = 0; I <x. length; I ++)

{

Txt = txt + "<tr> ";

Xx = x [I]. getElementsByTagName ("TITLE ");

{

Try

{

Txt = txt + "<td>" + xx [0]. firstChild. nodeValue + "</td> ";

}

Catch (er)

{

Txt = txt + "<td> </td> ";

}

}

Xx = x [I]. getElementsByTagName ("ARTIST ");

{

Try

{

Txt = txt + "<td>" + xx [0]. firstChild. nodeValue + "</td> ";

}

Catch (er)

{

Txt = txt + "<td> </td> ";

}

}

Txt = txt + "</tr> ";

}

Txt = txt + "</table> ";

Document. getElementById ('txtcdinfo'). innerHTML = txt;

}

}

Xmlhttp. open ("GET", url, true );

Xmlhttp. send ();

}

</Script>

</Head>

<Body>

<Div id = "txtCDInfo">

<Button onclick = "loadXMLDoc ('CD _ catalog. xml')"> Get cd info </button>

</Div>

</Body>

</Html>

The content of the xml file is as follows:

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<CATALOG>

<CD>

<TITLE> Empire Burlesque </TITLE>

<ARTIST> Bob Dylan </ARTIST>

<COUNTRY> USA </COUNTRY>

<COMPANY> Columbia </COMPANY>

<PRICE> 10.90 </PRICE>

<YEAR> 1985 </YEAR>

</CD>

<CD>

<TITLE> Hide your heart </TITLE>

<ARTIST> Bonnie Taylor </ARTIST>

<COUNTRY> UK </COUNTRY>

<COMPANY> CBS Records </COMPANY>

<PRICE> 9.90 </PRICE>

<YEAR> 1988 </YEAR>

</CD>

<CD>

<TITLE> Greatest Hits </TITLE>

<ARTIST> Dolly Parton </ARTIST>

<COUNTRY> USA </COUNTRY>

<COMPANY> RCA </COMPANY>

<PRICE> 9.90 </PRICE>

<YEAR> 1982 </YEAR>

</CD>

<CD>

<TITLE> Still got the blues </TITLE>

<ARTIST> Gary Moore </ARTIST>

<COUNTRY> UK </COUNTRY>

<COMPANY> Virgin records </COMPANY>

<PRICE> 10.20 </PRICE>

<YEAR> 1990 </YEAR>

</CD>

<CD>

<TITLE> Eros </TITLE>

<ARTIST> Eros Ramazzotti </ARTIST>

<COUNTRY> EU </COUNTRY>

<COMPANY> BMG </COMPANY>

<PRICE> 9.90 </PRICE>

<YEAR> 1997 </YEAR>

</CD>

<CD>

<TITLE> One night only </TITLE>

<ARTIST> Bee Gees </ARTIST>

<COUNTRY> UK </COUNTRY>

<COMPANY> Polydor </COMPANY>

<PRICE> 10.90 </PRICE>

<YEAR> 1998 </YEAR>

</CD>

<CD>

<TITLE> Sylvias Mother </TITLE>

<ARTIST> Dr. Hook </ARTIST>

<COUNTRY> UK </COUNTRY>

<COMPANY> CBS </COMPANY>

<PRICE> 8.10 </PRICE>

<YEAR> 1973 </YEAR>

</CD>

<CD>

<TITLE> Maggie May </TITLE>

<ARTIST> Rod Stewart </ARTIST>

<COUNTRY> UK </COUNTRY>

<COMPANY> Pickwick </COMPANY>

<PRICE> 8.50 </PRICE>

<YEAR> 1990 </YEAR>

</CD>

<CD>

<TITLE> Romanza </TITLE>

<ARTIST> Andrea Bocelli </ARTIST>

<COUNTRY> EU </COUNTRY>

<COMPANY> Polydor </COMPANY>

<PRICE> 10.80 </PRICE>

<YEAR> 1996 </YEAR>

</CD>

<CD>

<TITLE> When a man loves a woman </TITLE>

<ARTIST> Percy Sledge </ARTIST>

<COUNTRY> USA </COUNTRY>

<COMPANY> Atlantic </COMPANY>

<PRICE> 8.70 </PRICE>

<YEAR> 1987 </YEAR>

</CD>

<CD>

<TITLE> Black angel </TITLE>

<ARTIST> Savage Rose </ARTIST>

<COUNTRY> EU </COUNTRY>

<COMPANY> Mega </COMPANY>

<PRICE> 10.90 </PRICE>

<YEAR> 1995 </YEAR>

</CD>

<CD>

<TITLE> 1999 Grammy Nominees </TITLE>

<ARTIST> exist </ARTIST>

<COUNTRY> USA </COUNTRY>

<COMPANY> Grammy </COMPANY>

<PRICE> 10.20 </PRICE>

<YEAR> 1999 </YEAR>

</CD>

<CD>

<TITLE> For the good times </TITLE>

<ARTIST> Kenny Rogers </ARTIST>

<COUNTRY> UK </COUNTRY>

<COMPANY> Mucik Master </COMPANY>

<PRICE> 8.70 </PRICE>

<YEAR> 1995 </YEAR>

</CD>

<CD>

<TITLE> Big Willie style </TITLE>

<ARTIST> Will Smith </ARTIST>

<COUNTRY> USA </COUNTRY>

<COMPANY> Columbia </COMPANY>

<PRICE> 9.90 </PRICE>

<YEAR> 1997 </YEAR>

</CD>

<CD>

<TITLE> Tupelo Honey </TITLE>

<ARTIST> Van Morrison </ARTIST>

<COUNTRY> UK </COUNTRY>

<COMPANY> Polydor </COMPANY>

<PRICE> 8.20 </PRICE>

<YEAR> 1971 </YEAR>

</CD>

<CD>

<TITLE> soulville </TITLE>

<ARTIST> Jorn Hoel </ARTIST>

<COUNTRY> Norway </COUNTRY>

<COMPANY> WEA </COMPANY>

<PRICE> 7.90 </PRICE>

<YEAR> 1996 </YEAR>

</CD>

<CD>

<TITLE> The very best of </TITLE>

<ARTIST> Cat Steven S </ARTIST>

<COUNTRY> UK </COUNTRY>

<COMPANY> Island </COMPANY>

<PRICE> 8.90 </PRICE>

<YEAR> 1990 </YEAR>

</CD>

<CD>

<TITLE> Stop </TITLE>

<ARTIST> Sam Brown </ARTIST>

<COUNTRY> UK </COUNTRY>

<COMPANY> A and M </COMPANY>

<PRICE> 8.90 </PRICE>

<YEAR> 1988 </YEAR>

</CD>

<CD>

<TITLE> Bridge of Spies </TITLE>

<ARTIST> t' Pau </ARTIST>

<COUNTRY> UK </COUNTRY>

<COMPANY> Siren </COMPANY>

<PRICE> 7.90 </PRICE>

<YEAR> 1987 </YEAR>

</CD>

<CD>

<TITLE> Private Dancer </TITLE>

<ARTIST> Tina Turner </ARTIST>

<COUNTRY> UK </COUNTRY>

<COMPANY> Capitol </COMPANY>

<PRICE> 8.90 </PRICE>

<YEAR> 1983 </YEAR>

</CD>

<CD>

<TITLE> Midt om natten </TITLE>

<ARTIST> Kim Larsen </ARTIST>

<COUNTRY> EU </COUNTRY>

<COMPANY> Medley </COMPANY>

<PRICE> 7.80 </PRICE>

<YEAR> 1983 </YEAR>

</CD>

<CD>

<TITLE> Pavarotti Gala Concert </TITLE>

<ARTIST> Luciano Pavarotti </ARTIST>

<COUNTRY> UK </COUNTRY>

<COMPANY> DECCA </COMPANY>

<PRICE> 9.90 </PRICE>

<YEAR> 1991 </YEAR>

</CD>

<CD>

<TITLE> The dock of the bay </TITLE>

<ARTIST> Otis Redding </ARTIST>

<COUNTRY> USA </COUNTRY>

<COMPANY> Atlantic </COMPANY>

<PRICE> 7.90 </PRICE>

<YEAR> 1987 </YEAR>

</CD>

<CD>

<TITLE> Picture book </TITLE>

<ARTIST> Simply Red </ARTIST>

<COUNTRY> EU </COUNTRY>

<COMPANY> Elektra </COMPANY>

<PRICE> 7.20 </PRICE>

<YEAR> 1985 </YEAR>

</CD>

<CD>

<TITLE> Red </TITLE>

<ARTIST> The Communards </ARTIST>

<COUNTRY> UK </COUNTRY>

<COMPANY> London </COMPANY>

<PRICE> 7.80 </PRICE>

<YEAR> 1987 </YEAR>

</CD>

<CD>

<TITLE> Unchain my heart </TITLE>

<ARTIST> Joe Cocker </ARTIST>

<COUNTRY> USA </COUNTRY>

<COMPANY> EMI </COMPANY>

<PRICE> 8.20 </PRICE>

<YEAR> 1987 </YEAR>

</CD>

</CATALOG>

I hope this article will help you design javascript programs.

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

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