Javascript Ajax to obtain and set Headers

Javascript Ajax to obtain and set Headers

Header-related methods in the XMLHttpRequest object:

SetRequestHeader (

, ) -- Set the header with the specified value;

GetResponseHeader (

) -- Get the value of the specified header;

GetAllResponseHeaders () -- obtains all headers in the form of a single string;

 

Overwrite the HTTP Method of the request. The following code avoids the restriction that the firewall only allows GET and POST requests;

 

httpRequest.setRequestHeader(X-HTTP-Method-Override,DELETE);

Disable content Caching:

 

 

httpRequest.setRequestHeader(Cache-Control,no-cache);

Apples Cherries BananasLoad content <script> var buttons = document. getElementsByTagName (button); for (var I = 0; I