The encapsulation of the AJAX request get method

function get (URL, options, callback) { //define Get function

if (XMLHttpRequest) {

var xhr=new xmlhttprequest ();

}else{

var xhr=new activexobject ("Microsoft.XMLHTTP"); //compatible with IE

}

xhr. onreadystatechange = function (callback) {

if (xhr. readyState = = = 4) {

if ((Xhr.status >= && xhr.status <) | | xhr.status = = 304) {

Callback (Xhr.responsetext);

}else{

Alert ("The request was unsuccessful:" + XHR. Status)

}

}

}

var seriurl = url + '? ' + serialize (options);

XHR. Open (' Get ', Seriurl, true);

XHR. Send (NULL);
}

function serialize (data) {

if (!data) return ';

var pairs = [], value;

for (name in data) { //Traversal Object Properties

if (!data.hasownproperty (name)) continue; //Filter out properties and methods of inherited prototypes

if (typeof data[name] = = = ' function ') continue; //Filter out function method

Value = Data[name].tostring (); //attribute value to string

Name = encodeURIComponent (name); //The property name string can be encoded as a URI component. Returns a copy of the value uristring, where some of the characters are replaced by a hexadecimal escape sequence.

Value = encodeURIComponent (value); //property value for URI encoding.

Pairs.push (name + ' = ' + value); //property names and values into an array

}

Return Pairs.join (' & '); //The elements in the array are returned in string form with & separate

}

Get ('/information ', {name: ' NetEase ', age:18}, function (data) {

Console.log (data);

　　Processing return Data

});

The encapsulation of the AJAX request get method