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Web_Technology - Week 11 Exercise - Solved

Introduction to Web Technology 

 

Lab Programming


 

Initial Setup: Create​ a directory to store the code of this lab exercise. Follow the instructions below to start a web server at the newly created directory. 

 

Running web server on  Mac​  using command:​          

 

python3 -m http.server [port-number] -d [web-directory]

 

For example, to run on port 50000 and directory /Users/jsmith/Desktop/myweb 

 

python3 -m http.server 50000 -d "/Users/jsmith/Desktop/myweb"

 

The website will be at the address:  http://localhost:50000/​      
 

 

Running web server on  Windows​  using command:​  

 

python -m http.server [port-number] -d [web-directory]

 

For example, to run on port 8000 and directory "C:\Users\jsmith\Desktop\my web" 

 

python -m http.server 8000 -d "C:\Users\jsmith\Desktop\my web"

 

The website will be at the address:  http://localhost:8000/​  
 

 

 

             

This is a sample code for making AJAX call to get JSON: 

 

// make ajax query function makeAjaxQuery()

{

  // create an XMLHttpRequest   var xhttp = new XMLHttpRequest();

 

  // create a handler for the readyState change   xhttp.onreadystatechange = function() {     readyStateChangeHandler(xhttp);

  };

 

  // making query by async call

  var queryUrl = "url-to-query-the-server";   xhttp.open("GET", queryUrl, true);   xhttp.send();

}

 

// handler for the readyState change function readyStateChangeHandler(xhttp)

{

  if (xhttp.readyState == XMLHttpRequest.DONE)

  {        

    if(xhttp.status == 200)

    {

      // status = 200 means OK       handleStatusSuccess(xhttp);

    }     else

    {

      // status is NOT OK

      handleStatusFailure(xhttp);

    }

  }

}

 

 

 

 

 

 

 

 
// XMLHttpRequest failed

function handleStatusFailure(xhttp)

{

  alert("AJAX request fail");   alert("readyState = " + xhttp.readyState);   alert("status = " + xhttp.status);

}

 

 

// XMLHttpRequest success

function handleStatusSuccess(xhttp)

{

  alert("AJAX request success");

  

  // get the response json   var jsonText = xhttp.responseText;   alert(jsonText);

 

  // parse the json into an object   var obj = JSON.parse(jsonText);

 

  // display the object on the page   display(obj);

}

 

// display the javascript object info on the webpage function display(obj)

{

  // TODO

}

 
 

             

Question 1. Create a JSON document ​ faculty.json​  with the following content:​          

 

{

  "name": "Faculty of Engineering and Information Sciences",

  "abbreviation": "EIS",

  "email": "eis@uow.edu.au",

  "web": "www.uow.edu.au/engineering-information-sciences"


 

Create a web page Question1.html​ .​  

On the web page, display a button “Get Faculty Details”.  

When the user clicks this button, write an AJAX call to get the above JSON file, parse the JSON into a Javascript object, and then display the Javascript object on the webpage as follows: 

 

  

 

             

Question 2. Create a JSON document ​ airport.json​  with the following content:​          

{

  "searchQuery": "Australia",

  "searchResult": [

    {

      "airportName": "Sydney Airport",

      "ICAO": "YSSY",

      "IATA": "SYD",

      "city": "Sydney",

      "country": "Australia"

    },

    {

      "airportName": "Canberra Airport",

      "ICAO": "YSCB",

      "IATA": "CBR",

      "city": "Canberra",

      "country": "Australia"

    },

    {

      "airportName": "Brisbane Airport",

      "ICAO": "YBBN",

      "IATA": "BNE",

      "city": "Brisbane",

      "country": "Australia"

    },

    {

      "airportName": "Adelaide Airport",

      "ICAO": "YPAD",

      "IATA": "ADL",

      "city": "Adelaide",

      "country": "Australia"

    },

    {

      "airportName": "Hobart International Airport",

      "ICAO": "YMHB",

      "IATA": "HBA",

      "city": "Hobart",

      "country": "Australia"

    },

    {

      "airportName": "Melbourne Airport",

      "ICAO": "YMML",

      "IATA": "MEL",

      "city": "Melbourne",

      "country": "Australia"

    },

    {

      "airportName": "Perth Airport",

      "ICAO": "YPPH",

      "IATA": "PER",

      "city": "Perth",

      "country": "Australia"

    },

    {

      "airportName": "Darwin International Airport",

      "ICAO": "YPDN",

      "IATA": "DRW",

      "city": "Darwin",

      "country": "Australia"

    }

  ]

}
 

Create a web page Question2.html​ .​  

On the web page, display a button “Search Airport”.  

When the user clicks this button, write an AJAX call to get the above JSON file, parse the JSON into a Javascript object, and then display the Javascript object on the webpage as follows: 

  

 

  

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