如何使用javascript验证护照号码？ [英] How to validate passport number using javascript ?

问题描述

我做了自己的研究，发现在验证护照号码时遵循了以下指导原则和假设。护照号码的格式如下：



A12 34567



所有格式均相同护照号码。即第一个字符是英文字母的大写字母，后跟2个数字，然后是可选空格，后跟5个数字。



我们带来额外的假设：< br $>


第一个数字或最后一个数字永远不会是0

第一个字符不能是Q，X或Z.

 <  输入    type   =  radio      class   =  checkPassport >  <  标签 >  Passport数字<   / label  >  <   / input  >  < ;  输入    type  < span class =code-keyword> =  hidden      id   = 护照    class   =  hiddenPassport    value   =     /  >  
 <  输入   类型  =  text    id   =  passport    class   =  textPassport    name   =  passport    style   =  display：none   占位符  = 输入您的护照号码     <？php     getpostvalue（'passport'）;？ >  /> 

我似乎无法获得正确的逻辑，请帮助。



JavaScript代码

< pre lang =   Javascript< /跨度>> 
  function  said_validate（passport）
 {
  var  regsaid = / [a-zA-Z] { 2 } [0-9] { 7 } /; 
 
  if （regsaid.test（passport）==  false ）
 {
  document  .getElementById（  status）。innerHTML =  护照尚未生效。; 
} 
  else  
 {
  document  .getElementById （  status）。innerHTML =  您输入了有效的护照号码！; 
} 
} 

解决方案

小块解决 -

• 删除空格。

• 计算字符 - 是否足够？

• char [0]有效吗？

• 最后一个字符无效？

• 等。

将它们作为级联放入一个函数中最有效的感觉。当人离开输入框时检查值。返回true / false。处理问题，如果有的话。*







*您可以更具体地说明错误，但只是说这是无效的。

这个正则表达式可以解决问题：

 / ^ [A-PR-WY] [1-9] \\\？\\\ {4} [1-9] 

/ ig

或者，在模式属性中：

 <  输入    ...     pattern   =  ^ [A-PR-WYa-pr-wy] [1-9] \\\\？ \d {4} [1-9] 

I did my own research and find out that following guidelines and assumptions are followed while validating Passport Numbers. The Passport Number is of the following format :

A12 34567

The format will be same for all the Passport numbers. i.e. the first character is an upper case letter of the English alphabet, followed by 2 numbers, then an optional space followed by 5 numbers.

We bring additional assumptions:

The first digit or the last digit will never be 0
The first character cannot be Q, X or Z.

<input type="radio"  class="checkPassport"><label>Passport Number</label></input><input type="hidden"  id="passport" class="hiddenPassport" value="" />
<input type="text" id="passport" class="textPassport" name="passport" style="display:none" placeholder="Enter your passport number"  <?php getpostvalue('passport');?> />

I cant seem to get the right logic for this, please help.

JavaScript code

<pre lang="Javascript">
function said_validate(passport)
{
        var regsaid = /[a-zA-Z]{2}[0-9]{7}/;
 
        if(regsaid.test(passport) == false)
        {
            document.getElementById("status").innerHTML = "Passport is not yet valid.";
        }
        else
        {
            document.getElementById("status").innerHTML = "You have entered a valid Passport number!";
        }
}

解决方案

Solve in small pieces -

• Remove spaces.

• Count characters - are there enough?

• Is char[0] valid?

• is last char invalid?

• etc.

Put them in a function as a cascade that makes the most efficient sense. Check the value when the person leaves the input box. Return true/false. Handle problems if any.*



* You can be more specific about the error but just saying it's invalid is enough.

This regular expression should do the trick:

/^[A-PR-WY][1-9]\d\s?\d{4}[1-9]

/ig

Or, in the pattern attribute:

<input ... pattern="^[A-PR-WYa-pr-wy][1-9]\d\s?\d{4}[1-9]

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