Question

In: Computer Science

Can anyone add a validation function to my html? First, ensure that your form uses at...

Can anyone add a validation function to my html? First, ensure that your form uses at least three of the following field types: check boxes, text boxes, option buttons, selection lists, and text areas. Then, program validation for your form ensuring that users enter values or make selections in all fields, and verifying at least one other aspect of at least one of the fields. Provide appropriate feedback to users when the form fails validation. Test your completed program until all validation works reliably with different combinations of valid and erroneous data.

<------------------------------------------------------------------------------------------------------->

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Case Project</title>
<link href="layout.css" rel="stylesheet" type="text/css">
</head>
<body>
<h1>Lamborghini</h1>
<p><a href='index.html'>Lamborghini</a> <a href='ferrari.html'>Ferrari</a> <a href='bugatti.html'>Bugatti</a> <a href='rollsroyce.html'>Rolls-Royce</a></p>
<hr>
<p><img src='https://vignette.wikia.nocookie.net/pawnstarsthegame/images/6/6e/2003_Lamborghini_Murcielago.png'>The Aventador has been created to anticipate the future, as demonstrated by the use of innovative technology, including a V12 engine and the extensive use of carbon fiber. The authentic design masterpieces together stark dynamism with aggression to produce a cutting edge carbon fiber monocoque. The interior of the Aventador combines high-level technology and luxury equipment with premium-quality materials, skilfully crafted with the expertise characteristic of the finest Italian traditions. A supercar family that has already become a legend in its own right. Discover technical specifications, dimensions, performance, and the detailed features of all the new Lamborghini Aventador models.</p>
  

</script>
</body>
</html>

Solutions

Expert Solution

function validateform(){
var name=document.form.name.value;

var group = document.form.yes;

select = document.getElementById('select');

for (var i=0; i<group.length; i++) {
if (group[i].checked)
break;
}
if (i==group.length)
return alert("No radio button is checked");
alert("Radio Button " + (i+1) + " is checked.");
}


if (name==null || name==""){
alert("Please fill name");
return false;
}else if(!this.form.checkbox.checked){

alert("Please check the box");
return false;
}

else if(select.value)

{return true;}
}

if (document.getElementById("txtarea").value == ""){

        alert("Enter the text");

       document.getElementById("txtarea").focus();

               }

               else {

                   alert(document.getElementById("txtarea_consolidation").value);

               }

<form name = "form" method="post" action="" onsubmit="return validateform()">

   <input type="text" name="name"><br/> <input type="checkbox" name="checkbox" value="check"/>

<input type="radio" id="1" name="yes" value="yes"/>

<select id="select">

<option value="">Choose an option</option>

<option value="option1">Option1</option>

   </select>

<textarea id="txtarea"></textarea><br />

</form>

venereology answered 6 months ago
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