function
ajax(){
var
ajaxData = {
type:arguments[0].type ||
"GET"
,
url:arguments[0].url ||
""
,
async:arguments[0].async ||
"true"
,
data:arguments[0].data ||
null
,
dataType:arguments[0].dataType ||
"text"
,
contentType:arguments[0].contentType ||
"application/x-www-form-urlencoded"
,
beforeSend:arguments[0].beforeSend ||
function
(){},
success:arguments[0].success ||
function
(){},
error:arguments[0].error ||
function
(){}
}
ajaxData.beforeSend()
var
xhr = createxmlHttpRequest();
xhr.responseType=ajaxData.dataType;
xhr.open(ajaxData.type,ajaxData.url,ajaxData.async);
xhr.setRequestHeader(
"Content-Type"
,ajaxData.contentType);
xhr.send(convertData(ajaxData.data));
xhr.onreadystatechange =
function
() {
if
(xhr.readyState == 4) {
if
(xhr.status == 200){
ajaxData.success(xhr.response)
}
else
{
ajaxData.error()
}
}
}
}
function
createxmlHttpRequest() {
if
(window.ActiveXObject) {
return
new
ActiveXObject(
"Microsoft.XMLHTTP"
);
}
else
if
(window.XMLHttpRequest) {
return
new
XMLHttpRequest();
}
}
function
convertData(data){
if
(
typeof
data ===
'object'
){
var
convertResult =
""
;
for
(
var
c
in
data){
convertResult+= c +
"="
+ data[c] +
"&"
;
}
convertResult=convertResult.substring(0,convertResult.length-1)
return
convertResult;
}
else
{
return
data;
}
}
使用格式跟jquery的ajax差不多：
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ajax({
type:
"POST"
,
url:
"ajax.php"
,
dataType:
"json"
,
data:{
"val1"
:
"abc"
,
"val2"
:123,
"val3"
:
"456"
},
beforeSend:
function
(){
//some js code
},
success:
function
(msg){
console.log(msg)
},
error:
function
(){
console.log(
"error"
)
}
})
|