如何使用javascript验证护照号码？

本文介绍了如何使用javascript验证护照号码？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 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： 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 = 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> 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]