Salesforce OAuth with REST API using Javascript

Question

I have an app in my salesforce developer account that I want to allow my users to access from a remote app that I am building. I see that I must use OAuth2.0 to first author

Answer 1

You can not make this request from JavaScript. You'll need to make a server side request. There are many implementations of this flow in PHP, C#, Java, etc.

Answer 2

I'm posting my ajax code here that has worked for me and this CORS error in console doesn't matter. If you see in network you will get the access token. see the ajax code below.

function gettoken()
{
    var param = {
      grant_type: "password",
      client_id : "id here",
      client_secret : "seceret here ",
      username:"username",
      password:"password with full key provided by sf"};
$.ajax({
    url: 'https://test.salesforce.com/services/oauth2/token',
    type: 'POST',
    data: param,
    dataType: "json",
    contentType: "application/x-www-form-urlencoded",
    success: function (data) {
        alert(data);
    }

});
}

I hope this will work for you perfectly.

Answer 3

You will need to handle the OAUTH part on your own server. This isn't just due to lack of CORS, there is also no way to securely OAUTH purely on the client-side. The server could really be anything but here is an example server written in Java using Play Framework which has a JavaScript / AngularJS client as well: http://typesafe.com/activator/template/reactive-salesforce-rest-javascript-seed

Answer 4

I think you need to add the origin URL/IP in CORS setting as well in salesforce if you are making a request from Javascript app so it can get access to salesforce data.