我在使用 javascript 验证时遇到了一些小问题。我需要验证表单中的选择下拉菜单。到目前为止,我可以验证所有字段,但不知何故我无法验证选择下拉列表?有人可以帮我验证我的表格吗?
这是我的javascript:
<script type="text/javascript">
if( document.form1.Email.value != "" )
{
// Put extra check for data format
var ret = validateEmail(document.form1.Email);
if( ret == false )
{
return false;
}
}
}
function validate()
{
//username password First_n Last_n Company Mobile Email Residence
if( document.form1.First_n.value == "" )
{
alert( "Please enter your first name!" );
document.form1.First_n.focus() ;
return false;
}
if( document.form1.Last_n.value == "" )
{
alert( "Please enter your last name!" );
document.form1.Last_n.focus() ;
return false;
}
if( document.form1.username.value == "" )
{
alert( "Please enter your username!" );
document.form1.username.focus() ;
return false;
}
if( document.form1.password.value == "" )
{
alert( "Please enter your password!" );
document.form1.password.focus() ;
return false;
}
if( document.form1.Mobile.value == "" )
{
alert( "Please provide us your mobile number!" );
document.form1.Mobile.focus() ;
return false;
}
if( document.form1.Email.value == "" )
{
alert( "Please provide us your Email!" );
document.form1.Email.focus() ;
return false;
}
var yourSelect = document.getElementById('Residence');
alert(yourSelect.options[yourSelect.selectedIndex].value)
if(yourSelect.options[yourSelect.selectedIndex].value == '' )
{
alert( "Please provide your country!" );
return false;
}
if( document.form1.Email.value != "" )
{
// Put extra check for data format
var ret = validateEmail(document.form1.Email);
if( ret == false )
{
return false;
}
}
return( true );
}
</script>
我的表格:
<form name="form1" method="post" action="add_new.php" onsubmit="return(validate(false));">
<div style="clear:both;padding:0px 10px 0 10px;margin-bottom:40px;">
<h5>Interested in</h5>
<input id="toggle-on" class="toggle toggle-left" name="toggle" value="Hosting" type="radio" checked>
<label for="toggle-on" class="btn">Hosting</label>
<input id="toggle-off" class="toggle toggle-right" name="toggle" value="Email accounts" type="radio"
><label for="toggle-off" class="btn">Email accounts</label>
</div>
<div style="clear-both;">
<input name="First_n" type="text" placeholder="First Name*" class="login-text-lbl-pink-no-width" id="First_n">
<input name="Last_n" type="text" placeholder="Last Name*" class="login-text-lbl-pink-no-width" id="Last_n">
</div>
<input name="username" type="text" placeholder="Username*" class="login-text-lbl-pink-no-width" id="username"><br/>
<input name="password" type="password" placeholder="Password*" class="login-text-lbl-pink-no-width" id="password"><br/>
<input name="Company" type="text" placeholder="Company" class="login-text-lbl-pink-odd" id="Company"> <br/>
<input name="Mobile" type="text" placeholder="Phone Number*" class="pink-transparent-item" id="Mobile"> <br/>
<input name="Email" type="text" placeholder="Email*" class="login-text-lbl-pink-odd" id="Email"> <br/>
<select name="Residence" id="Residence" style="background-color: rgba(240, 96, 96, 0.62);border: none;-webkit-appearance: none;
-moz-appearance: none;appearance: none;height: 40px;font-style: italic;width: 270px;padding: 10px;margin: 5px;color: #552726;border-radius: 5px;border: none;float: left;" class="required">
<option value="zero" selected>Country*</option>
<option value="US">America</option>
<option value="DE">Germany</option>
<option value="IT">Italy</option>
<option value="HK">Hong Kong</option><br/>
<input name="domain" class="login-text-lbl-pink-odd" type="text" style="width:350px;margin-bottom:40px;" placeholder="Existing domain" id="domain"> <br/>
<input type="submit" name="Submit" value="Submit" style='font-family: "Neo Sans Light", Verdana, Tahoma;' class="login-button-pink">
</form>