Based on Vue, the function of converting RMB to uppercase

Basic concepts and functions

Principle of lowercase to uppercase

The basic principle of lowercase to uppercase is to convert the input numbers bit by bit according to the Chinese characters and numbers rules. In Chinese, capital numbers representing amounts include "1, 2, 3, si, 5, 5, 7, 8, 9", "zero" that represents zero, and "yuan, jia, and min" that represents unit.

Application scenarios

In scenarios such as financial reports, invoice issuance, bank transfers, etc., the amount usually needs to be displayed in capital form to increase the formality and seriousness of the document.

Example 1: Basic numbers to capitalize

First, let's look at a simple Vue component implementation that converts numeric to uppercase.

<template>
  <div>
    <input type="text" v-model="amount" placeholder="Please enter the amount">
    <p>Caps amount: {{ convertToChinese }}</p>
  </div>
</template>

<script>
export default {
  data() {
    return {
      amount: '',
      chineseDigits: ['zero', 'one', 'two', '3', '生', 'Wu', 'land', 'Seven', 'eight', 'Nine'],
      units: ['', 'pickup', 'Bai', 'thousand']
    };
  },
  computed: {
    convertToChinese() {
      if (!) return '';
      let result = '';
      let digits = (/\./g, '').split('').map(Number);
      let unitIndex = 0;
      
      for (let i =  - 1; i >= 0; i--) {
        let digit = digits[i];
        if (digit > 0) {
          result = [digit] + [unitIndex % 4] + result;
          unitIndex++;
        } else if (result && result[ - 1] !== 'zero') {
          result += 'zero';
        }
      }

      return result || 'zero';
    }
  }
};
</script>

This code shows how to convert numbers in the input box to capitalization. Note that the conversion here only applies to integer parts.

Example 2: Amount conversion with decimal points

For an amount with a decimal point, we need to process the decimal part during conversion and add the corresponding "yuan", "angle", and "minute".

computed: {
  convertToChinese() {
    if (!) return '';
    let [integerPart, decimalPart = ''] = ('.');
    let integerResult = (integerPart);
    let decimalResult = (decimalPart);
    
    return `${integerResult}${decimalResult}`;
  },
  convertIntegerPart(integerPart) {
    let result = '';
    let digits = ('').map(Number);
    let unitIndex = 0;
    
    for (let i =  - 1; i >= 0; i--) {
      let digit = digits[i];
      if (digit > 0) {
        result = [digit] + [unitIndex % 4] + result;
        unitIndex++;
      } else if (result && result[ - 1] !== 'zero') {
        result += 'zero';
      }
    }

    return result || 'zero';
  },
  convertDecimalPart(decimalPart) {
    let result = '';
    if (decimalPart) {
      let parts = (2, '0').split('');
      result = `Yuan`;
      if (parts[0]) {
        result += `One corner`;
      } else if (parts[0] === '0' && parts[1]) {
        result += `零One corner`;
      }
      if (parts[1]) {
        result += `One minute`;
      }
    }
    return result;
  }
}

Example 3: Use Vue filter for conversion

In Vue, we can also define a global filter to handle the conversion of the amount, which can be easily used anywhere.

// Define filters in('convertToChinese', function(value) {
  // The conversion logic is the same as above});

// Use filters in templates<p>Caps amount: {{ amount | convertToChinese }}</p>

Example 4: Encapsulate the conversion logic using Vue plugin

If we want to uniformly manage the logic of amount conversion throughout the project, we can wrap it as a Vue plugin.

// 
export default {
  install(Vue) {
    .$convertToChinese = function(value) {
      // Conversion logic    };
  }
};

// Use plugins inimport CurrencyConvertPlugin from './currencyConvertPlugin';
(CurrencyConvertPlugin);

// Use in components<p>Caps amount: {{ $convertToChinese(amount) }}</p>

Example 5: Automated conversion with Vue CLI

If you use Vue CLI to build a project, you can automatically process the amount conversion during the construction process by configuring the Webpack plug-in or PostCSS plug-in.

// 
 = {
  chainWebpack: config => {
    // Configure the Webpack plug-in to handle the amount conversion  }
};

Tips for using it in actual work

• International support: Consider using international libraries (such as vue-i18n) to support currency formats in different regions.
• Unit Testing: Write unit tests to ensure the accuracy of the transformation logic.
• Code Refactoring: As the requirements change, check and refactor the code regularly to maintain its maintainability.
• Performance optimization: For frequently called conversion logic, consider using cache to improve performance.

Through the above examples and techniques, you should be able to convert RMB amounts from lowercase to uppercase in your project, and understand different implementation methods and application scenarios. This is especially important for developing professional financial applications.

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