VirtualMV/JavaScript/Case Study: Forms/Files

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Overview

This page contains the complete code for this case study

Initial DVD Rentals form

Example :Click here to run the DVD Rental Form.

vmv_js-index.html

<!DOCTYPE html>
<html>
<head>
  <title>Forms and JavaScript Example</title>
  <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
  <link rel="stylesheet" type="text/css" href="vmv_js-style.css">
  <script type="text/javascript" src="vmv_js-index.js"> </script>
</head>
 
<body>
  <form name="myForm" action="">
	<h1>Welcome to 
	  <script type="text/javascript">document.write( strCompanyName )</script> System</h1>
	<div id="main">
		<div class="col1">
			<h4>Customer details</h4>
			<span class="lbl180" >Name (Last, First)*</span>
			<input name="txtFullName" type="text" style="width: 186px"><br>
			<span class="lbl180">Address*</span><input name="txtAdd" type="text" style="width: 186px"><br>
			<span class="lbl180">Phone*</span><input name="txtPhone" type="text" style="width: 159px"><br>
			<span class="lbl180">Type</span> 
			<input type="checkbox" name="chkCuType" value="Standard" /> Standard
			<input type="checkbox" name="chkCuType" value="Club" /> Club
            <input type="checkbox" name="chkCuType" value="VIP" /> VIP
			<br />
			<div>
				<h4>Totals</h4>
				<span class="lbl120">DVD</span>
			  <input name="txtTotalDVD" type="text" disabled="disabled" size="20" style="text-align:right"><br>
				<span class="lbl120">Blu-Ray</span>
			  <input name="txtTotalBluRay" type="text" disabled="disabled" size="20" style="text-align:right"><br>
				<span class="lbl120">Total&nbsp;</span><input name="txtTotal" type="text" disabled="disabled" size="20" style="text-align:right"><br>
			</div>
		</div> <!-- Col 1 -->
		<div class="col2">
			<p>Today's Date: <script type="text/javascript">fnDisplayTodaysDate();</script></p>
		  <h4>Add item</h4>		
					<span class="lbl120">Type</span>
						<select name="selType">
							<option value="DVD">DVD</option>						
 							<option value="Blu-Ray">Blu-Ray</option>
						</select> 
					<br>
					<span class="lbl120">Title</span><input name="txtItemDsn" style="width: 225px" type="text"><br>
					<span class="lbl120">Rental Price</span><input name="txtItemPrice" type="text" style="width: 80px">
					<br> 
					<span class="lbl120"></span>
					<input name="btnAddItem" type="button" value="Add Item"  onclick="fnAddItem()"> 
			<div class="itemlist">
			  <h4>Rental list</h4>
		      <table id="myTable" border="1" style=" border-collapse: collapse;">
   				  <tr><th>Type</th><th>Title</th><th>Rental 
				Price</th></tr>
  				</table>
			</div>
 
		</div> <!-- Col 2 -->
 
	</div> <!-- Main -->  
  	<div  style="clear: both;"></div>
	<div style=" text-align:center">
		<br>
        <input type="checkbox" name="chkFormOk" /> 
		<input name="btnChkForm" type="button" value="Check Data" onclick="fnCheckData()">
		<input name="btnReset" type="reset" value="Reset Form">
		<input name="btnRentalList" type="button" value="Display Rental List" onclick="fnDisplayForm()">
		<input name="btnDisplayGallery" type="button" value="New Releases" onclick="fnNewReleases()">
		</div>
	</form>  
</body>
</html>

vmv_js-style.css

/* CSS Document */
body, div, td, th, h2, h3, h4 {  
    font-family: verdana,sans-serif; }
body {
	background: #EDEBE3; color: #333;
	padding: 16px 20px 48px 20px;
	margin: 0; }
h1 { margin:0;}
 
/* "#" uses id tag */
#main {
	border: 1px solid #666;
	clear: both;  width: 100%; }
 
.col1 {
	background: #93A5C4;  float:left;
	padding: 10px 5px 10px 5px;
	border: 1px solid #666;}
.col2 {
	background: #93A5C4; float:left;
	padding: 10px 5px 10px 5px;
	border: 1px solid #666;	}
.itemlist{ border:thin; border-color:blue;background:silver ;}		
.chkHide {visibility:hidden }
 
.lbl120 { padding-left: 10px; width: 120px; float:left;}
.lbl180 { padding-left: 10px; width: 180px; float:left;}

vmv_js-index.js

//Global Variables ----------------------------------------------------------------
var strCompanyName = "Virtual DVD Rentals";
 
	function fnDisplayTodaysDate() {
		var currentTime = new Date();
		document.write( currentTime.toLocaleDateString() );
	}
function fnCheckOK(strName) {
  strName.style.background = "#FFFFFF";
  if((strName.value=="")||!isNaN(strName.value)) {
    strName.style.background = "#FBEC5D";
	document.myForm.chkFormOk.checked = false;
    return false}
  else {return true}
}
 
function fnComputeTotals() {
//Calculations	
    var objMyTable = document.getElementById('myTable');
    var varRows = varMyTable.rows.length;
    var vntDVD = 0;
    var vntBluRay = 0;
    if (varRows > 1) { 
        for (intI = 1; intI < varRows; intI++) {
 	    if (objMyTable.rows[intI].cells[0].innerHTML == "DVD") {
		vntDVD += parseInt (varMyTable.rows[intI].cells[2].innerHTML);
	    } else {
		vntBluRay += parseInt (varMyTable.rows[intI].cells[2].innerHTML);
	    }
	 }
     }
//  alert("This is a message" + vntDVD);
    document.myForm.txtTotalDVD.value = vntDVD.toFixed(2);
    document.myForm.txtTotalBluRay.value = vntBluRay.toFixed(2);
    var vntItems = vntDVD +  vntBluRay;
    document.myForm.txtTotal.value = (vntItems).toFixed(2);
}
 
  function fnCheckData() {
// Set checked field 
 document.myForm.chkFormOk.checked = true;
// Check Name, Address & Phone
    fnCheckOK(document.myForm.txtFullName);
    fnCheckOK(document.myForm.txtAdd);
    fnCheckOK(document.myForm.txtPhone);
    fnComputeTotals();
  }
 
  function fnAddItem() {
    var objTable = document.getElementById("myTable");
    var varRow = objTable.insertRow(-1); // change to 0 to add at the top of the table
    var varCell1 = varRow.insertCell(0);
    var varCell2 = varRow.insertCell(1);
    var varCell3 = varRow.insertCell(2);
	objRef = document.myForm.selType;
	txtSelectType = objRef.options[objRef.selectedIndex].value;
        varCell1.innerHTML = txtSelectType; 
	varCell2.innerHTML = document.myForm.txtItemDsn.value;
        varCell3.innerHTML = document.myForm.txtItemPrice.value;
      }
	function fnDisplayForm() {
//  Make sure data is ok
	    fnCheckData();
// If Ok display form 
		if ( document.myForm.chkFormOk.checked == true ) {
	    var objMyTable = document.getElementById('myTable');
	    var varRows = objMyTable.rows.length;
	    var intCost = 0;
		if (varRows > 1) { 
		   for (intI = 1; intI < varRows; intI++) {
 		     intCost += parseInt (objMyTable.rows[intI].cells[2].innerHTML);
		   }
		  }
		winMsg=window.open("","_blank");
		winMsg.document.write("<html><head><title>Rentals</title>");
		winMsg.document.write("</head>");
		winMsg.document.write("<body>");
		winMsg.document.write("<h2>Rentals</h2>");
		// Swap Name around
		strFullName = document.myForm.txtFullName.value;
		winMsg.document.write("<h3>"+ "Name: " + strFullName + "</h3>");
		// Customer type
		objCuType=document.myForm.chkCuType;
		var strX = ""
                if (objCuType[0].checked) {strX = strX + objCuType[0].value +" ";};
		if (strX.length == 0) { strX = "None"; }
		winMsg.document.write("<p>Customer type: " + strX +"</p>");
		winMsg.document.write("<table border='1'>" + varMyTable.innerHTML + "</table>");
		winMsg.document.write("<p> Total Cost = " + intCost + "<p>");
		winMsg.document.write("</body></html>");
	  } else { alert ("error in data") }
	} 
 
	function fnNewReleases() {
	      window.open("vmv_js-NewReleases.html","winNewReleases",
   "toolbar=no,location=yes,directories=no,\
    status=no,menubar=no,scrollbars=yes,resizable=no,\
    copyhistory=yes,width=640,height=480")
  }

vmv_js-NewReleases.html

<html>
<head>
  <title>New Releases</title>
  <style type='text/css'>
      h1 { color: #00FF00; }
  </style>
  </head>
  <body>
    <h1>New Releases</h1>
    <h2>Rome in a day</h2>
    <p>[image] DVD description</p>
    <h2>Dhaka by night</h2>
    <p>[image] DVD description</p>
   </body>
</html>

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VirtualMV/JavaScript/Case Study: Forms/Files. (2017). In WikiEducator/VirtualMV wiki. Retrieved October 23, 2017, from http://wikieducator.org/VirtualMV/JavaScript/Case_Study:_Forms/Files    (zotero)