ajax post 跨域访问

php：

header('Access-Control-Allow-Origin:*');header('Access-Control-Allow-Methods:POST,GET');header('Access-Control-Allow-Credentials:true');

js:

$.ajax({type: 'POST',url: 'https://to.com/postHere.php',crossDomain: true,data: '{"some":"json"}',dataType: 'json',success: function(responseData, textStatus, jqXHR) {var value = responseData.someKey;},error: function (responseData, textStatus, errorThrown) {alert('POST failed.');}});