Self-implemented ajax encapsulation example sharing

Copy codeThe Code is as follows:
// Javascript Object: ajax Object
// Created By RexLee
Function Ajax (url, data ){
This. url = url;
This. data = data;
This. browser = (function (){
If (navigator. userAgent. indexOf ("MSIE")> 0 ){
Return "MSIE"; // IE browser
} Else {
Return "other"; // other
}})();
};
Ajax. prototype = {
Get: function (){
Var result;
Var xmlhttp;
If (this. browser = 'msie '){
Try {
Xmlhttp = new ActiveXObject ('Microsoft. xmlhttp ');
} Catch (e ){
Xmlhttp = new ActiveXObject ('msxml2. xmlhttp ');
}
} Else {
Xmlhttp = new XMLHttpRequest ();
};
Xmlhttp. onreadystatechange = function (){
Result = xmlhttp. responseText; // closure, which cannot use this. Attribute
};
Xmlhttp. open ('get', this. url + '? '+ This. data, false); // true cannot capture data, why?
Xmlhttp. send (null );
Return result;
},
Post: function (){
Var result;
Var xmlhttp;
If (this. browser = 'msie '){
Xmlhttp = new ActiveXObject ('Microsoft. xmlhttp ');
} Else {
Xmlhttp = new XMLHttpRequest ();
};
Xmlhttp. onreadystatechange = function (){
Result = xmlhttp. responseText; // closure, which cannot use this. Attribute
};
Xmlhttp. open ('post', this. url, false); // It must be set to false; otherwise, responseText cannot be captured.
Xmlhttp. setRequestHeader ("Content-Type", "application/x-www-form-urlencoded"); // in POST, this sentence must be
Xmlhttp. send (this. data );
Return result;
}
};

// Var a = new ajax ('opp2. js ','');
// Alert ('by GET \ n' + a. get ())
// Alert ('by POST \ n' + a. post ());
///////////////////////////////

 

Window. onload = function (){
Document. getElementById ("btn"). onclick = function (){
Var p = document. getElementById ("t"). value;
Var a = new Ajax ("phpOOP/getPage. php", "page =" + p );
Document. getElementById ("box"). innerHTML = a. get ();
};
}