js.StringPolyfill.js Maven / Gradle / Ivy

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JVM AOT compiler currently generating JavaScript, C++, Haxe, with initial focus on Kotlin and games.

There is a newer version: 0.6.8

if (!String.prototype.reverse) {
	String.prototype.reverse = function() {
		return this.split("").reverse().join("");
	};
}

if (!String.prototype.startsWith) {
	String.prototype.startsWith = function(searchString, position){
		position = position || 0;
		return this.substr(position, searchString.length) === searchString;
	};
}

if (!String.prototype.endsWith) {
	String.prototype.endsWith = function(searchString, position) {
		var subjectString = this.toString();
		if (typeof position !== 'number' || !isFinite(position) || Math.floor(position) !== position || position > subjectString.length) {
			position = subjectString.length;
		}
		position -= searchString.length;
		var lastIndex = subjectString.indexOf(searchString, position);
		return lastIndex !== -1 && lastIndex === position;
	};
}

if (!String.prototype.replaceAll) {
	String.prototype.replaceAll = function(search, replacement) {
		var target = this;
		return target.split(search).join(replacement);
	};
}

if (!String.prototype.trim) {
	String.prototype.trim = function () {
		return this.replace(/^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g, '');
	};
}

if (!String.prototype.quote) {
	String.prototype.quote = function () {
		return JSON.stringify(this);
	};
}