false in the beforeSend function will cancel the request. As of jQuery 1.5, the beforeSend option will be called regardless of the type of request.false, it will force requested pages not to be cached by the browser. Note: Setting cache to false will only work correctly with HEAD and GET requests. It works by appending "_={timestamp}" to the GET parameters. The parameter is not needed for other types of requests, except in IE8 when a POST is made to a URL that has already been requested by a GET.false, it will force requested pages not to be cached by the browser. Note: Setting cache to false will only work correctly with HEAD and GET requests. It works by appending _={counter} to the GET parameters. The parameter is not needed for other types of requests, except in IE8 when a POST is made to a URL that has already been requested by a GET."xml": Returns a XML document that can be processed via jQuery."html": Returns HTML as plain text; included script tags are evaluated when inserted in the DOM."script": Evaluates the response as JavaScript and returns it as plain text. Disables caching by appending a query string parameter, _=[TIMESTAMP], to the URL unless the cache option is set to true. Note: This will turn POSTs into GETs for remote-domain requests. Prior to jQuery 3.5.0, unsuccessful HTTP responses with a script Content-Type were still executed."script": Evaluates the response as JavaScript and returns it as plain text. Disables caching by appending a query string parameter, _={counter}, to the URL unless the cache option is set to true. Note: This will turn POSTs into GETs for remote-domain requests. Prior to jQuery 3.5.0, unsuccessful HTTP responses with a script Content-Type were still executed."json": Evaluates the response as JSON and returns a JavaScript object. Cross-domain "json" requests that have a callback placeholder, e.g. ?callback=?, are performed using JSONP unless the request includes jsonp: false in its request options. The JSON data is parsed in a strict manner; any malformed JSON is rejected and a parse error is thrown. As of jQuery 1.9, an empty response is also rejected; the server should return a response of null or {} instead. (See json.org for more information on proper JSON formatting.)"jsonp": Loads in a JSON block using JSONP. Adds an extra "?callback=?" to the end of your URL to specify the callback. Disables caching by appending a query string parameter, "_=[TIMESTAMP]", to the URL unless the cache option is set to true."jsonp": Loads in a JSON block using JSONP. Adds an extra "?callback=?" to the end of your URL to specify the callback. Disables caching by appending a query string parameter, _={counter}, to the URL unless the cache option is set to true."text": A plain text string."text xml" for the dataType. You can also make a JSONP request, have it received as text, and interpreted by jQuery as XML: "jsonp text xml". Similarly, a shorthand string such as "jsonp xml" will first attempt to convert from jsonp to xml, and, failing that, convert from jsonp to text, and then from text to xml.Prior to jQuery 3.5.0, unsuccessful HTTP responses with a script Content-Type were still executed.
By default, $.getScript() sets the cache setting to false. This appends a timestamped query parameter to the request URL to ensure that the browser downloads the script each time it is requested. You can override this feature by setting the cache property globally using $.ajaxSetup():
By default, $.getScript() sets the cache setting to false. This appends a query parameter with a counter value to the request URL to ensure that the browser downloads the script each time it is requested. You can override this feature by setting the cache property globally using $.ajaxSetup():
$.ajaxSetup({
cache: true