401 Unauthorized when calling when doing AJAX call from SPFX webpart, Working perfectly from postman

[KavithaSP]

I want to create an incident in Service now using SharePoint SPFX JavaScript mode,

Here is the token generation code. It's working fine from postman but not from SharePoint spfx 

I'm getting.   net::ERR_ABORTED 401 (Unauthorized) 

$.ajax({
url: "https://company.com/oauth_token.do",
type: "POST",
headers: { "Content-Type": "application/x-www-form-urlencoded",
"Access-Control-Allow-Origin": "*",
"Access-Control-Allow-Methods": "GET, POST, PUT"
},
crossDomain: true,
dataType : 'jsonp',
data: {
"grant_type": "password",
"client_id": "123123213",
"client_secret": "123213213",
"username": "test_user",
"password": "12345132"
},
success: function() {

alert("success");
},
error: function() {
alert("error");
}
});