Create ajax.js

ajax.js

@@ -0,0 +1,44 @@
+function ajax(options){
+  let xhr;
+  if (window.XMLHttpRequest){
+    xhr=new XMLHttpRequest();
+  }else{
+    xhr=new ActiveXObject("Microsoft.XMLHTTP");
+  }
+  xhr.onreadystatechange=function(){
+    if (xhr.readyState==4 && xhr.status==200){
+      options.success(this.responseText);
+    }else if(xhr.readyState==4){
+      if(options.fail){
+        options.fail(this.statusText);
+      }else{
+        console.log(this.statusText);
+      }
+    }
+  }
+  xhr.open(options.method||"GET",options.url,true);
+  if(options.beforeSend){
+    options.beforeSend(xhr);
+  }
+  if(options.send){
+    if(options.sendtype==="fd"){
+        let formdata=new FormData();
+        for(let [key,value] of options.send){
+            formdata.appear(key,value);
+        }
+        xhr.send(formdata);
+    }else if(options.sendtype==="fd2"){
+        xhr.send(new FormData(options.send));
+    }else if(options.sendtype==="send"){
+        xhr.send(options.send);
+    }else if(options.sendtype==="json"){
+        xhr.send(JSON.stringify(options.send));
+    }else{
+        xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;charset=UTF-8");
+        xhr.send(options.send);
+    }
+  }else{
+    xhr.send();
+  }
+  return xhr;
+}