String.prototype.format

String.prototype.format.js

Object.defineProperty(String.prototype, "format", {
	"value": function(...args) {
		const replacer = function(match, index) {
			return (args[parseInt(index)] || "");
		};
		return this.replace(/\${(\d*?)\}/g, replacer);
	}
});
/***********************************************************************************************************/
/**********************************************     Usage     **********************************************/
/***********************************************************************************************************/
"${0} ${1} ${2}!".format("This", "is", "Sparta"); // Output: This is Sparta!
"${0} ${1} ${0}!".format("This", "is", "Sparta"); // Output: This is This!
"${0} ${1} ${2}!".format("This", "is"); // Output: This is !
"${0} ${1} ${2}!".format("This", "is", "Sparta", "Woo"); // Output: This is Sparta!
"${0} ${1} ${3}!".format("This", "is", "Sparta"); // Output: This is !