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JavaScript alphabets and spaces validation

Spaces and Letters or alphabets only validation in JavaScript is used to make sure that all the characters entered in the specified field must be any character from A-Z or a-z or white space.

Regular Expression:

/^[a-z][a-z\s]*$/

Example

<!DOCTYPE html>
<html lang="en">
<head>
<script> 
function lettersAndSpaceCheck(name)
{
   var regEx = /^[a-z][a-z\s]*$/;
   if(name.value.match(regEx))
     {
      return true;
     }
   else
     {
     alert("Please enter letters and space only.");
     return false;
     }
}    
</script> 
</head>
<body>
<div class="mail">
<h2>JavaScript Letters And Space Validation</h2>
<form name="form1" action="#"> 
Name: <input type='text' name='name'/></br></br>
<input type="submit" name="submit" value="Submit" onclick="lettersAndSpaceCheck(document.form1.name)"/>
</form>
</div>
</body>
</html>
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