JavaScript string format like python

Below is an example of using JavaScript string format like python

if (!String.prototype.format) {
    String.prototype.format = function () {
        var i = 0, args = arguments;
        return this.replace(/{}/g, function () {
            return typeof args[i] != 'undefined' ? args[i++] : '';
        });
    };
}
var text1 = 'John',
    text2 = 'JavaScipt',
    text3 = 'python';

'Hello world, my name is {} .I love {} and {}'.format(text1, text2, text3);
  // "Hello world, my name is John .I love JavaScipt and python"
Code language: JavaScript (javascript)