Invoke Ajax methods using jquery (seven-parameter method) _ajax

$.ajax ({
	URL: "/project Name/userservlet",	//the path to be requested
	Data:{method: "Ajaxvalidateloginname", Loginname:value},	//Request method, request data
	async:true,//	whether for asynchronous operation
	Cache:false,//	cache result
	type: "POST",	//Request Method
	DataType: "JSON",//	server return data is what type
	success:function (result) {	//This function is invoked when the server executes successfully, and the parameter result is the value returned by the server
		if (result)		
			$ ("label"). Text ("Good Man");
		Else
			$ ("label"). Text ("Bad person")

	;}
)