javascript版format函數，方便實現複雜字串聯接

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javascript版format函數，方便實現複雜字串聯接

String.prototype.format = function () {      var args = arguments;      console.log(‘args: ‘, args);      if (typeof args[0] === ‘object‘) {        var obj = args[0];        console.log(obj);                return this.replace(/\{([A-Za-z_]+)\}/g,          function (m, i) {            console.log(m, i);            return obj[i];          });      } else {        return this.replace(/\{(\d+)\}/g,          function (m, i) {            console.log(m, i);            return args[i];          });      }    }    var x = ‘abc{a}, {b}‘.format({a:1, b:2});console.log(x)console.log(‘this is {0} {1}, {2}‘.format(10,22,33))

javascript版format函數，方便實現複雜字串聯接