Homework Answers
Code
index.html
<!DOCTYPE html>
<html>
<head>
<title>USD to British pounds converter</title>
<style>
body {
background-color: white;
font-family: Arial, Helvetica, sans-serif;
}
td{
padding: 10px;
}
#inputBox{
padding: 40px;
}
#goBtn:hover{
cursor: pointer;
}
#errormsg{
color: red;
}
#valnumber{
display: none;
}
#required{
display: none;
}
</style>
<script>
function convert(){
document.getElementById("required").style.display = "none";
document.getElementById("valnumber").style.display = "none";
var usd = document.getElementById("inputusd").value;
if(usd==""){ // check if the input is empty
document.getElementById("required").style.display = "block";
return;
}
else if(isNaN(usd)){ // check if input is not a valid number
document.getElementById("valnumber").style.display = "block";
return;
}
var xmlhttp = new XMLHttpRequest();
xmlhttp.onreadystatechange = function() {
if (this.readyState == 4 && this.status == 200) {
document.getElementById("usd").innerHTML = usd;
document.getElementById("bp").innerHTML = this.responseText;
}
};
var url = "http://127.0.0.1:8090/converter.php" + '?q=' + usd;
xmlhttp.open("GET", url, true);
xmlhttp.send();
}
</script>
</head>
<body>
<div id="inputBox">
<table>
<tr>
<td>USD</td>
<td><input type="text" Style="width: 150px;" id="inputusd"/> </td>
<td id="errormsg"><span id="required">Please enter a value</span><span id="valnumber">Enter a valid number</span></td>
</tr>
<tr>
<td colspan="2" style="text-align:center">
<button id="goBtn" type="button" onclick="convert()">Convert</button>
</td>
</tr>
</table>
<div style="margin-left: 10px;">
<span id="usd">1</span> USD = <span id="bp">0.8</span> British Pounds
</div>
</div>
</body>
</html>
converter.php
<?php
header("Access-Control-Allow-Origin: *");
// get the q parameter from URL
$q = $_REQUEST["q"];
$r = $q * 0.8;
echo $r;
?>
Output
1. Initial screen
2. Case: Text input is blank
3. Case: Input is not a valid number
4. Case: Valid input
Note
I have given the code for HTML file (index.html) and PHP file(converter.php). On valid input, an AJAX call is made to converter.php to convert it to British Pounds. I am running the PHP file with server IP address 127.0.0.1 and port 8090. Please replace the URL in the AJAX call with the appropriate value.
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and open the template in the editor.
-->
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******************************************************************************
CODE:
<!DOCTYPE html>
<!--
To change this license header, choose License Headers in Project
Properties.
To change this template file, choose Tools | Templates
and open the template in the editor.
-->
<html>
<head>
<title>Nice</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width,
initial-scale=1.0">
<script>
var textFromTextArea;
function getWords(){
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"use strict";
/*
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Filename: mas_register.js
Author:
Date:
Function List
=============
formTest()
Performs a validation test on the selection of the conference
session package and the conference discount number
calcCart()
Calculates the cost of the registration and saves data
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