Question

我正在尝试使用此处指定的邮政编码正则表达式：UK Postcode Regex (Comprehensive)使用javascript，但它似乎不起作用。我正在使用：

var postcode = "^(([gG][iI][rR] {0,}0[aA]{2})|((([a-pr-uwyzA-PR-UWYZ][a-hk-yA-HK-Y]?[0-9][0-9]?)|(([a-pr-uwyzA-PR-UWYZ][0-9][a-hjkstuwA-HJKSTUW])|([a-pr-uwyzA-PR-UWYZ][a-hk-yA-HK-Y][0-9][abehmnprv-yABEHMNPRV-Y]))) {0,}[0-9][abd-hjlnp-uw-zABD-HJLNP-UW-Z]{2}))$";
var aPCode = frm.PCode.value;
if (!(postcode.test(aPCode)))
{
  AnError += "Invalid Postcode.\n";
}

我得到的错误是if (!(postcode.test(aPCode)))行。 IE7（我启用了JavaScript错误的浏览器）报告错误“对象不支持此属性或方法”。这意味着我不能在字符串上使用.test方法，但这就是它应该被使用的地方，不是吗？我似乎无法找到我的代码的错误。

Answer 1

postcode是一个字符串，而不是正则表达式。用正斜杠包装它并删除包装引号以使其成为正则表达式：

var postcode = /^(([gG][iI][rR] {0,}0[aA]{2})|((([a-pr-uwyzA-PR-UWYZ][a-hk-yA-HK-Y]?[0-9][0-9]?)|(([a-pr-uwyzA-PR-UWYZ][0-9][a-hjkstuwA-HJKSTUW])|([a-pr-uwyzA-PR-UWYZ][a-hk-yA-HK-Y][0-9][abehmnprv-yABEHMNPRV-Y]))) {0,}[0-9][abd-hjlnp-uw-zABD-HJLNP-UW-Z]{2}))$/;

see the docs

或者将正则表达式的字符串版本运行到RegExp对象中进行转换：

var postcode = "^(([gG][iI][rR] {0,}0[aA]{2})|((([a-pr-uwyzA-PR-UWYZ][a-hk-yA-HK-Y]?[0-9][0-9]?)|(([a-pr-uwyzA-PR-UWYZ][0-9][a-hjkstuwA-HJKSTUW])|([a-pr-uwyzA-PR-UWYZ][a-hk-yA-HK-Y][0-9][abehmnprv-yABEHMNPRV-Y]))) {0,}[0-9][abd-hjlnp-uw-zABD-HJLNP-UW-Z]{2}))$";
var postcode = new RegExp(postcode);

Javascript正则表达式错误测试邮政编码

1 个答案: