<input type="text" id="formcheck" class="contact" maxlength="255" />

<input type="text" id="formcheck" class="contact" maxlength="255" value="Blue"/>
<input type="button" id="clickB" value="click me">

$("#clickB").click(function(){
   if (document.getElementById('formcheck').value != 'Blue') {
       alert('Please enter the correct word.');
       document.getElementById('formcheck').focus();
       return false;
   }
})

if (f.formcheck.value != 'Blue') {
    alert('Please enter the correct word.')
    f.formcheck.focus()
    return false
}

if (f.formcheck.value != 'Blue') { alert('Please enter the correct word.');  f.formcheck.focus();  return false; }