moth/www/res/common.js

41 lines
1.1 KiB
JavaScript

function loadJSON(url, callback) {
function loaded(e) {
callback(e.target.response);
}
var xhr = new XMLHttpRequest()
xhr.onload = loaded;
xhr.open("GET", url, true);
xhr.responseType = "json";
xhr.send();
}
function createElement(tagName) {
return document.createElement(tagName);
}
// Make code readable by providing Function.prototype.bind in older JS environments
if (!Function.prototype.bind) {
Function.prototype.bind = function(oThis) {
if (typeof this !== 'function') {
// closest thing possible to the ECMAScript 5
// internal IsCallable function
throw new TypeError('Function.prototype.bind - what is trying to be bound is not callable');
}
var aArgs = Array.prototype.slice.call(arguments, 1),
fToBind = this,
fNOP = function() {},
fBound = function() {
return fToBind.apply(this instanceof fNOP && oThis
? this
: oThis,
aArgs.concat(Array.prototype.slice.call(arguments)));
};
fNOP.prototype = this.prototype;
fBound.prototype = new fNOP();
return fBound;
};
}