[英]Phone number validation html form
I am a beginner in javascript and am not sure what is going wrong in the code below. 我是javascript的初学者,不确定下面的代码出了什么问题。 It doesn't show any alert when a wrong number is entered.
输入错误的号码时,它不会显示任何警报。 Thanks for the help.The html code for the the attribute is
感谢您的帮助。该属性的html代码为
<li><label for="phonenumber">Phone:</label></li>
<li><input type="tel" name="phonenumber" /></li>
Validation code: 验证码:
function formValidation()
{
var uphone = document.registration.phonenumber;
{
if(ValidatePhone(uphone))
}
return false;
}
function ValidatePhone(uphone)
{
var phoneformat = /(^\d{3}-\d{3}-\d{4})$/;
if(uphone.value.match(phoneformat))
{
return true;
}
else
{
alert('You have entered an invalid phone number!');
uphone.focus();
return false;
}
}
This function is one big syntax error (which would prevent the whole script from running): 此函数是一个很大的语法错误(它将阻止整个脚本运行):
function formValidation()
{
var uphone = document.registration.phonenumber;
{
if(ValidatePhone(uphone))
}
return false;
}
The inner braces in the function don't do anything here and the if statement has no statement (or block, for that matter) following it, so the }
directly following it would cause a SyntaxError. 函数中的大括号在此处不执行任何操作,并且if语句后没有任何语句(就此而言,不是语句),因此直接在其后的
}
会导致SyntaxError。 Did you simply mean: 您只是说:
function formValidation()
{
var uphone = document.registration.phonenumber;
ValidatePhone(uphone);
return false;
}
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