String.Format in JavaScript
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<html><head><title>JavaScript String.Format</title><script type="text/javascript">// This is the function.String.prototype.format = function (args) {var str = this;return str.replace(String.prototype.format.regex, function(item) {var intVal = parseInt(item.substring(1, item.length - 1));var replace;if (intVal >= 0) {replace = args[intVal];} else if (intVal === -1) {replace = "{";} else if (intVal === -2) {replace = "}";} else {replace = "";}return replace;});};String.prototype.format.regex = new RegExp("{-?[0-9]+}", "g");// Sample usage.var str = "She {1} {0}{2} by the {0}{3}. {-1}^_^{-2}";str = str.format(["sea", "sells", "shells", "shore"]);alert(str);</script></head></html>
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