function createPage(webUrl,listTitle,fileName,success, failure)
{
 getListUrl(webUrl,listTitle,
    function(listUrl){

     var fileUrl = listUrl + '/' + fileName
     var url = webUrl + "/_api/web/GetFolderByServerRelativeUrl('" + listUrl + "')/Files" +
               "/AddTemplateFile(urlOfFile='" + fileUrl + "',templateFileType=0)";
     jQuery.ajax({
        url: url,
        method: "POST",
        body: {
          "Title": "Test",
          "JobDescriptionCoreResponsibiliti" : "Testewa",
      "ContentTypeId" : "0x010100C568DB52D9D0A14D9B2FDCC96666E9F2007948130EC3DB064584E219954237AF3900242457EFB8B24247815D688C526CD44D00D1CC7EAA363D486D9DF33F07803859F3"
        },
        headers: {
               "accept": "application/json;odata=verbose",
               "content-type": "application/json;odata=verbose",
               "X-RequestDigest" : jQuery("#__REQUESTDIGEST").val()
        },
        success: function (data) {
            success(data.d);
        },
        error: function (data) {
            failure(data);
        }
     });

    },
    failure
  );


}


function getListUrl(webUrl,listTitle,success, failure)
{
    var url = webUrl + "/_api/web/lists/GetByTitle('" + listTitle +  "')/RootFolder";
    jQuery.ajax({
        url: url,
        method: "GET",
        headers: {
               "accept": "application/json;odata=verbose",
               "content-type": "application/json;odata=verbose"
        },
        success: function (data) {
            success(data.d.ServerRelativeUrl);
        },
        error: function (data) {
            failure(data);
        }
    });
}


//Usage
createPage(_spPageContextInfo.webAbsoluteUrl,'Pages','Tesxt.aspx',
  function(page){
    console.log(JSON.stringify(page));
  },
  function(error){
    console.log(JSON.stringify(error));
  }
);