jquery string to pinyin

In front-end development, we often need to convert Chinese characters into pinyin to implement some functions, such as search, filtering, etc. jQuery is a commonly used JavaScript library that can easily manipulate DOM elements, and it also has many useful plug-ins. Therefore, this article will introduce how to use jQuery to convert a Chinese character string into a Pinyin string.

1. Prerequisite knowledge

Before you start, you need to master the following knowledge points:

1. The basic syntax and data types of JavaScript;
2. Basic syntax and selectors of jQuery.
3. Pinyin.js plug-in, which can convert Chinese characters into Pinyin, needs to be introduced first.

2. Introducing the Pinyin.js plug-in

In order to convert Chinese characters into Pinyin, a plug-in for this function needs to be introduced. Here we use the Pinyin.js plug-in. The plug-in can be downloaded through the following link:

https://github.com/ecomfe/pinyin.js/blob/master/demo/index.js

It can also be introduced online:

<script src="//unpkg.com/pinyinjs@2.0.1/dist/pinyin.min.js"></script>

3. Convert strings to Pinyin

With the prerequisite knowledge and plug-ins, we can start to implement the function of converting strings to Pinyin. The specific method is as follows:

function chineseToPinyin(str) {
  var pinyin = '';
  for (var i = 0; i < str.length; i++) {
    var code = str.charCodeAt(i);
    // 判断是否汉字
    if (code >= 0x4e00 && code <= 0x9fa5) {
      pinyin += Pinyin.getFullChars(str[i]).replace(/s/g, '') + ' ';
    } else {
      pinyin += str[i] + ' ';
    }
  }
  return pinyin.trim();
}

In the above code, we define a function named chineseToPinyin, which receives a string parameter str and returns a pinyin string. The specific implementation steps are as follows:

1. Define a pinyin variable to store the converted pinyin string.
2. Loop through each character in str and determine whether the character is a Chinese character based on the Unicode code. If so, use the Pinyin.getFullChars(str[i]) method to convert the Chinese character into Pinyin and add it to the pinyin variable . If not, add the character directly to the pinyin variable.
3. Finally, remove the extra spaces in the pinyin variable and return the pinyin string.

4. Usage method

After converting the string to Pinyin, how to use it? We can do this in the following way:

var str = 'jQuery字符串转拼音';
var pinyin = chineseToPinyin(str); // "jQuery zi fu chuan zhuan pin yin"

In the above code, we define a string variable str, the content is 'jQuery string to Pinyin', use the chineseToPinyin function to convert the string to Pinyin and assign it to pinyin variable, the final pinyin value is "jQuery zi fu chuan zhuan pin yin".

5. Summary

This article introduces how to use jQuery to convert a Chinese character string into a Pinyin string. The main idea is to convert Chinese characters to Pinyin through the Pinyin.js plug-in, and then determine whether there are Chinese characters in the string based on the Unicode code, and finally obtain the converted Pinyin string. Through the implementation of this article, it can provide more convenient support for functions such as search and filtering, while also increasing the readability and maintainability of the code.

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