在运行时向Javascript对象添加属性

Question

Let's say I have this function in javascript

    function EstablishUserSession(params) {
        gecResult = "noResult";            
        params["callbackOnSuccess"] = Success;
        params["callbackOnException"] = Exception;
        controller.establishUserSessionIAPI(params);
        return "requestSent";
    }

params is an object passed in through HtmlDocument.InvokeScript.. Looks like this

{ iapiUri: "dfdfdsf", language: "en", partnerUsername: "ddddd", integrationPartnerId: 1, cleartextPassword: "dddd"}

The above works fine in Chrome and FFox. Does not work in IE8. I get Object doesn't support property or method.

    function EstablishUserSession(params) {
        gecResult = "noResult";
        jQuery.extend(params, { callbackOnSuccess: Success, callbackOnException: Exception });
        controller.establishUserSessionIAPI(params);
        return "requestSent";
    }

Then I changed to Jquery.extend... works fine in Chrome and FFox. Does not work in IE8.

Does anyone out there know how to correctly extend an object to add properties as above!

note: Success and Exception are just callbacks

Answer 1

您可以使用对象的新副本。

var newParams = $.extend({ newProp : value}, oldParams);