<script type="text/javascript">
/**
*
* 模拟jquery的ready
*
*/
var ready = (function(){
var isReady = false,
funs = [];
function handle (e) {
if ( isReady ) {
return;
}
if ( e.type === 'readystatechange' && (document.readyState !== 'interactive' && document.readyState !== 'complete') ) {
return;
}
for ( var i = 0; i < funs.length; i++ ) {
funs[i].call(document);
}
isReady = true;
funs = null;
}
if ( document.addEventListener ) {
document.addEventListener( 'DOMContentLoaded', handle, false );
document.addEventListener( 'readystatechange', handle, false );
document.addEventListener( 'load', handle, false );
}
else if ( document.attachEvent ) {
document.attachEvent( 'onreadystatechange', handle );
document.attachEvent( 'onload', handle );
}
return function ready (callback) {
if ( isReady ) {
callback.call(document);
}
else {
funs.push(callback);
}
};
}());
/**
*
* 判断参数类型
* createTime: 2013/9/18
*
*/
function type (obj) {
var classTypes, objectTypes;
if ( obj == null ) {
return String(obj);
}
classTypes = {};
objectTypes = ('Boolean Number String Function Array Date RegExp Object Error').split(' ');
for ( var i = 0, len = objectTypes.length; i < len; i++ ) {
classTypes[ '[object ' + objectTypes[i] + ']' ] = objectTypes[i].toLowerCase();
}
if ( typeof obj === 'object' || typeof obj === 'function' ) {
var key = Object.prototype.toString.call(obj);
return classTypes[key];
}
return typeof obj;
}
// css按需加载
function loadCss (cssUrl, callback) {
var elem, bl,
isExecuted = false; // 防止在ie9中，callback执行两次
if ( cssUrl == null ) {
return String(cssUrl);
}
elem = document.createElement('link'),
elem.rel = 'stylesheet';
if ( type(callback) === 'function' ) {
bl = true;
}
// for ie
function handle() {
if ( elem.readyState === 'loaded' || elem.readyState === 'complete' ) {
if (bl && !isExecuted) {
callback();
isExecuted = true;
}
elem.onreadystatechange = null;
}
}
elem.onreadystatechange = handle;
// for 非ie
if (bl && !isExecuted) {
elem.onload = callback;
isExecuted = true;
}
elem.href = cssUrl;
document.getElementsByTagName('head')[0].appendChild(elem);
}
// js按需加载
function loadScript(scriptUrl, callback) {
var elem, bl,
isExecuted = false; // 防止在ie9中，callback执行两次
if (scriptUrl == null) {
return String(fn);
}
elem = document.createElement('script');
if ( type(callback) === 'function' ) {
bl = true;
}
// for ie
function handle(){
var status = elem.readyState;
if (status === 'loaded' || status === 'complete') {
if (bl && !isExecuted) {
callback();
isExecuted = true;
}
elem.onreadystatechange = null;
}
}
elem.onreadystatechange = handle;
// for 非ie
if (bl && !isExecuted) {
elem.onload = callback;
isExecuted = true;
}
elem.src = scriptUrl;
document.getElementsByTagName('head')[0].appendChild(elem);
}
</script>
