38 lines
901 B
JavaScript
38 lines
901 B
JavaScript
function getXHR(){
|
|
var xhr;
|
|
try {
|
|
xhr = new ActiveXObject("Msxml2.XMLHTTP");
|
|
} catch (e) {
|
|
try {
|
|
xhr = new ActiveXObject("Microsoft.XMLHTTP");
|
|
} catch (e) {
|
|
xhr = false;
|
|
}
|
|
}
|
|
if (!xhr && typeof XMLHttpRequest !== 'undefined') {
|
|
xhr = new XMLHttpRequest();
|
|
}
|
|
return xhr;
|
|
}
|
|
|
|
function getURL(url, params, callback) {
|
|
if (Object.keys(params).length > 0) {
|
|
var pairs = [];
|
|
for (key in params) {
|
|
pairs.push(key +'='+ encodeURIComponent(params[key]))
|
|
}
|
|
url += '?'+ pairs.join('&');
|
|
}
|
|
|
|
var xhr = getXHR();
|
|
xhr.open('GET', url, true);
|
|
xhr.onreadystatechange = function() {
|
|
if (xhr.readyState === 4) {
|
|
if(xhr.status === 200) {
|
|
callback(JSON.parse(xhr.responseText));
|
|
}
|
|
}
|
|
};
|
|
xhr.send(null);
|
|
}
|