用于验证 PRICE 的 RegExp [英] RegExp for validating PRICE

问题描述

我正在尝试验证价格字段:

I am trying to validate a Price field:

不允许:

• 空格
• 字母
• 负值

应该允许:

• 数字
• 逗号
• 十进制

推荐答案

RegExp 用于验证价格字段:

/^(d*([.,](?=d{3}))?d+)+((?!2)[.,]dd)?$/

演示说明:http://regex101.com/r/uG5lI0/1>

要验证的 Javascript 代码:

/^(d*([.,](?=d{3}))?d+)+((?!2)[.,]dd)?$/.test(input)

仅当格式正确时才进行验证，并在各自的位置使用点或逗号.

Will validate only if in correct format, with dots or commas in their respective places.

en_US 语言环境的国际格式 &美国国家格式:

International format for the en_US locale & US national format:

• 134.56
• 1,234.56
• 2,991,234.00

2 位小数的意大利国家格式:

Italian national format with 2 decimals:

• 134,56
• 21.234,56
• 1.234,56
• 9.321.234,56

de_DE 语言环境的国际格式:

International format for the de_DE locale:

• 134,56
• 1234,56
• 98281234,56

小数是可选的，对整数进行验证:

Decimals are optional, validation for whole amounts:

• 1234
• 1,234
• 2,991,234
• 1.234
• 9.321.234

function validatePrice(input) {
  return /^(d*([.,](?=d{3}))?d+)+((?!2)[.,]dd)?$/.test(input);
}

['WRONG',
  '1,234,56',
  '1.234.56',
  '-1993',
  '918,27.63',
  '122.42.24',
  '1,89,2',
  '',
  'Intl. format & US national format',
  '2.56',
  '14.56',
  '134.56',
  '1,234.56',
  '2,991,234.00',
  '',
  'Italian national format with 2 decimals',
  '9,56',
  '24,56',
  '134,56',
  '721.234,56',
  '21.234,56',
  '1.234,56',
  '9.321.234,56',
  '69.321.234,56',
  '269.321.234,56',
  '1.269.321.234,56',
  'International format for the de_DE locale',
  '1,56',
  '14,56',
  '134,56',
  '1234,56',
  '98281234,56',
  'No cents',
  '1',
  '14',
  '134',
  '1,234',
  '2,991,234',
  '9',
  '24',
  '134',
  '1.234',
  '9.321.234',
  '1',
  '14',
  '134',
  '1234',
  '98281234'
].forEach(function(n) {
  document.getElementById('results').innerHTML += "'" + n + "' => " + validatePrice(n) + "<br>";
})

<div id="results"></div>

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