Is there a way to extract information from an external XML document and incorporate it into an HTML file?

I am attempting to extract information from an XML file that is not stored on my website's server. My goal is to utilize this data for various purposes, such as generating charts. One specific example involves using weather data from an XML file located at . This XML file contains weather information for Central Park. I aim to retrieve the data found within the <value> tag nested in the <pressure> tag. This data will enable me to create a graph illustrating barometric pressure changes. While I prefer utilizing JavaScript for this task, it seems unlikely considering the file is not hosted on my server.

Please note: I am specifically seeking a solution for accessing the pressure data contained within this specific XML file. I am not interested in alternative methods for retrieving similar data from other sources, as I plan to work with various pieces of information from different XML files in the same manner.

javascriptxmlexternal

Answer №1

Check out this fascinating article discussing the use of Yahoo! Pipes to convert Xml weather data into JSON format for integration on a webpage without the need for server-side technologies like PHP or curl.

UPDATE

As someone new to jQuery, I delved deeper to discover that most of what was explained in the initial article can be simplified to

$.getJSON("<your Yahoo pipes url here>&_callback=?", function (data) {
    alert(data.value.items[0].data[0].parameters.wordedForecast.text[0]);
});

utilizing jQuery's built-in JSONP functionality.

Important Note!

Keep in mind that Yahoo requires the callback URL parameter to be named _callback

Great insights from this article on Cross-domain communications with JSONP were instrumental in formulating this response.

Answer №2

When your JavaScript code is located on a server, rather than a mobile device, use PHP to fetch the XML, sanitize it, and embed it into the HTML page. From there, you can easily retrieve it in your code and manipulate it using DOMParser.

Answer №3

If you want to retrieve data and take action on it from your server, consider using curl.

curl -o data.txt "http://forecast.weather.gov/MapClick.php?lat=40.78158&lon=-73.96648&FcstType=dwml"

This command will save the information in a file named data.txt. You can then choose to parse it on the server side and extract only the necessary data, or provide the entire file to your client if they are both operating within the same domain.

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