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string format

Format a string with '{0}','{1}'...

目前為 2022-12-20 提交的版本，檢視 最新版本。

此腳本不應該直接安裝，它是一個供其他腳本使用的函式庫。欲使用本函式庫，請在腳本 metadata 寫上： // @require https://update.cn-greasyfork.org/scripts/453846/1130256/string%20format.js 

  1. // ==UserScript==
  2. // @name string format
  3. // @namespace http://tampermonkey.net/
  4. // @version 2.0.2
  5. // @description Format a string with '{0}','{1}'...
  6. // @license Apache License 2.0
  7. // @author 捈荼
  8. // commented by ChatGPT
  9. // ==/UserScript==
  10.  
  11. (function () {
  12.     "use strict";
  13.  
  14.     // Check if the String.prototype.format function is already defined
  15.     if (String.prototype.format == undefined) {
  16.         // Define a new function named string_format_V2_0_2
  17.         let string_format_V2_0_2 = function () {
  18.             // Get the arguments passed to the function
  19.             let args = arguments;
  20.             // Initialize a counter variable
  21.             let cnt = 0;
  22.             // Check if the string contains numbered placeholders ({0}, {1}, etc.)
  23.             // If not, check if the string contains unnumbered placeholders ({})
  24.             return this.match(/{(\d+)}/g) == null && this.match(/{}/g) != null ?
  25.                 // If the string contains unnumbered placeholders, replace them with the corresponding arguments
  26.                 this.replace(/{}/g, (match) => {
  27.                     // If the corresponding argument is defined, return it; otherwise, return the placeholder
  28.                     return typeof args[cnt] != 'undefined' ? args[cnt++] : match;
  29.                 }) :
  30.                 // If the string contains numbered placeholders, replace them with the corresponding arguments
  31.                 this.replace(/{(\d+)}/g, (match, number) => {
  32.                     // If the argument at the specified index is defined, return it; otherwise, return the placeholder
  33.                     return typeof args[number] != 'undefined' ? args[number] : match;
  34.                 });
  35.         };
  36.         // Add the new function as the String.prototype.format function
  37.         String.prototype.format = string_format_V2_0_2;
  38.     } else {
  39.         // If the String.prototype.format function is already defined, check if it is the correct implementation
  40.         if (String.prototype.format.name != 'string_format_V2_0_2') {
  41.             // If the function is not the correct implementation, throw an error
  42.             throw 'String.prototype.format defined.';
  43.         }
  44.     }
  45. })();