Format a string with '{0}','{1}'...
目前為
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// ==UserScript==
// @name string format
// @namespace http://tampermonkey.net/
// @version 2.0.2
// @description Format a string with '{0}','{1}'...
// @license Apache License 2.0
// @author 捈荼
// ==/UserScript==
// commented by ChatGPT
(function () {
"use strict";
// Check if the String.prototype.format function is already defined
if (String.prototype.format == undefined) {
// Define a new function named string_format_V2_0_2
let string_format_V2_0_2 = function () {
// Get the arguments passed to the function
let args = arguments;
// Initialize a counter variable
let cnt = 0;
// Check if the string contains numbered placeholders ({0}, {1}, etc.)
// If not, check if the string contains unnumbered placeholders ({})
return this.match(/{(\d+)}/g) == null && this.match(/{}/g) != null ?
// If the string contains unnumbered placeholders, replace them with the corresponding arguments
this.replace(/{}/g, (match) => {
// If the corresponding argument is defined, return it; otherwise, return the placeholder
return typeof args[cnt] != 'undefined' ? args[cnt++] : match;
}) :
// If the string contains numbered placeholders, replace them with the corresponding arguments
this.replace(/{(\d+)}/g, (match, number) => {
// If the argument at the specified index is defined, return it; otherwise, return the placeholder
return typeof args[number] != 'undefined' ? args[number] : match;
});
};
// Add the new function as the String.prototype.format function
String.prototype.format = string_format_V2_0_2;
} else {
// If the String.prototype.format function is already defined, check if it is the correct implementation
if (String.prototype.format.name != 'string_format_V2_0_2') {
// If the function is not the correct implementation, throw an error
throw 'String.prototype.format defined.';
}
}
})();