Angular2 Text Mask文本支持添加及文本数字混合掩码配置咨询

Hey there! Let's figure out how to adjust your Angular Text Mask setup to accept both text and numbers instead of just digits. Your current mask uses /\d/ (which only matches numeric characters), so we'll tweak that to allow alphabetic characters too.

1. Quick Fix: Update Regex Mask for Alphanumeric Input #

The simplest way is to replace each /\d/ regex with one that matches both letters and numbers. Here are two common options:

• Use /[a-zA-Z0-9]/ to explicitly allow uppercase, lowercase letters, and digits (no underscores or special characters):

  // Updated mask for alphanumeric input
  mask: (RegExp | string)[] = [
    /[a-zA-Z0-9]/, /[a-zA-Z0-9]/, /[a-zA-Z0-9]/,
    '-',
    /[a-zA-Z0-9]/, /[a-zA-Z0-9]/, /[a-zA-Z0-9]/, /[a-zA-Z0-9]/
  ];
  

• Use /\w/ if you also want to allow underscores (since \w matches [a-zA-Z0-9_]):

  mask: (RegExp | string)[] = [
    /\w/, /\w/, /\w/,
    '-',
    /\w/, /\w/, /\w/, /\w/
  ];
  

Just apply this updated mask to your textMask directive in the template, and it'll now accept both text and numeric inputs.

2. Flexible Function Mask (For Dynamic Rules) #

If you need more control—like allowing text in some positions and only numbers in others, or changing rules based on user input—use a function-based mask. This lets you generate the mask dynamically:

// Define a custom mask function
generateAlphanumericMask = (rawValue: string): (RegExp | string)[] => {
  // Example: Keep your existing structure but allow alphanumeric everywhere
  return [
    /[a-zA-Z0-9]/, /[a-zA-Z0-9]/, /[a-zA-Z0-9]/,
    '-',
    /[a-zA-Z0-9]/, /[a-zA-Z0-9]/, /[a-zA-Z0-9]/, /[a-zA-Z0-9]/
  ];

  // You could add logic here, e.g.:
  // if (rawValue.startsWith('A')) { /* return different mask */ }
};

Then in your template:

<input [textMask]="{ mask: generateAlphanumericMask }" />

3. Bonus: Enhance User Experience with Pipes #

You can add a pipe to format input automatically—like converting all letters to uppercase:

maskOptions = {
  mask: [
    /[a-zA-Z0-9]/, /[a-zA-Z0-9]/, /[a-zA-Z0-9]/,
    '-',
    /[a-zA-Z0-9]/, /[a-zA-Z0-9]/, /[a-zA-Z0-9]/, /[a-zA-Z0-9]/
  ],
  pipe: (conformedValue: string) => conformedValue.toUpperCase()
};

Template usage:

<input [textMask]="maskOptions" />

Notes #

• If you need to support non-English letters (like accents or Unicode characters), use a regex like /[a-zA-ZÀ-ÿ0-9]/ or /\p{L}\p{N}/u (note: the u flag requires modern browser support).
• Make sure you're using the latest version of angular2-text-mask to avoid any compatibility issues with regex masks.

内容的提问来源于stack exchange，提问作者Geoff