kero
Version:
257 lines (227 loc) • 7.99 kB
JavaScript
/**
* Created by dingrf on 2015-11-18.
*/
window.u = window.u || {};
var u = window.u;
u.polyfill = true;
u._addClass = function(element,value){
var classes, cur, clazz, i, finalValue,rclass = /[\t\r\n\f]/g,
proceed = typeof value === "string" && value,rnotwhite = (/\S+/g);
if ( proceed ) {
// The disjunction here is for better compressibility (see removeClass)
classes = ( value || "" ).match( rnotwhite ) || [];
cur = element.nodeType === 1 && ( element.className ?
( " " + element.className + " " ).replace( rclass, " " ) : " ");
if ( cur ) {
i = 0;
while ( (clazz = classes[i++]) ) {
if ( cur.indexOf( " " + clazz + " " ) < 0 ) {cur += clazz + " ";}
}
// only assign if different to avoid unneeded rendering.
finalValue = (cur + "").trim();
if ( element.className !== finalValue ) {
element.className = finalValue;
}
}
}
return this;
};
u._removeClass = function(element, value) {
var classes, cur, clazz, j, finalValue,rnotwhite = (/\S+/g),rclass = /[\t\r\n\f]/g,
proceed = arguments.length === 0 || typeof value === "string" && value;
if ( proceed ) {
classes = ( value || "" ).match( rnotwhite ) || [];
// This expression is here for better compressibility (see addClass)
cur = element.nodeType === 1 && ( element.className ?
( " " + element.className + " " ).replace( rclass, " " ) :"");
if ( cur ) {
j = 0;
while ( (clazz = classes[j++]) ) {
// Remove *all* instances
while ( cur.indexOf( " " + clazz + " " ) >= 0 ) {
cur = cur.replace( " " + clazz + " ", " " );
}
}
// only assign if different to avoid unneeded rendering.
finalValue = value ? (cur + "").trim() : "";
if ( element.className !== finalValue ) {
element.className = finalValue;
}
}
}
return this;
};
u._hasClass = function(element,value){
var rclass = /[\t\r\n\f]/g;
if ( element.nodeType === 1 && (" " + element.className + " ").replace(rclass, " ").indexOf( value ) >= 0 ) {
return true;
}
return false;
};
u._toggleClass = function(element, value){
if ( u._hasClass(element, value) ) {
u._removeClass(element, value);
} else {
u._addClass(element, value);
}
}
if (!String.prototype.trim) {
String.prototype.trim = function () {
return this.replace(/^\s*(\b.*\b|)\s*$/, "$1");
};
}
if (!Array.prototype.indexOf) {
Array.prototype.indexOf = function (obj) {
for (var i = 0; i < this.length; i++) {
if (this[i] == obj)
return i;
}
return -1;
};
}
if (!Array.prototype.remove) {
Array.prototype.remove = function(index) {
if (index < 0 || index > this.length) {
alert("index out of bound");
return;
}
this.splice(index, 1);
};
}
// 遍历数组,执行函数
if (!Array.prototype.forEach) {
Array.prototype.forEach = function (fn) {
for (var i = 0, len = this.length; i < len; i++) {
fn(this[i], i, this);
}
};
}
if(!NodeList.prototype.forEach)
NodeList.prototype.forEach = Array.prototype.forEach;
function isDomElement(obj) {
if (window['HTMLElement']) {
return obj instanceof HTMLElement;
} else {
return obj && obj.tagName && obj.nodeType === 1;
}
}
/*IE8的querySelectorAll返回的对象不是Array也不是NodeList，不能调用forEach，因此重写此方法*/
/* 此处没有IE8标识，因此使用HTMLElement来进行判断*/
if(!window['HTMLElement']){
var _querySelectorAll = Element.prototype.querySelectorAll;
Element.prototype.querySelectorAll = function(selector) {
var result = _querySelectorAll.call(this,selector);
if(!isDomElement(this)){
return result;
}
var resArr = [];
for(var i = 0;i < result.length;i++){
resArr.push(result[i]);
}
return resArr;
}
var _docquerySelectorAll = document.querySelectorAll;
document.querySelectorAll = function(selector) {
try{
var result = _docquerySelectorAll.call(this,selector);
var resArr = [];
if(result.length > 0){
for(var i = 0;i < result.length;i++){
resArr.push(result[i]);
}
return resArr;
}else{
return result;
}
}catch(e){
}
}
}
if(!Element.prototype.addEventListener){
Element.prototype.addEventListener = function(event,fun){
var tag = this;
this.attachEvent("on"+event,function(){
fun.apply(tag,arguments);//这里是关键
});
}
}
// 绑定环境
if(typeof Function.prototype.bind !== 'function'){
Function.prototype.bind = function(context){
var fn = this;
var args = [];
for(var i = 1, len = arguments.length; i < len; i ++){
args.push(arguments[i]);
}
return function(){
// for(var j = 1, len = arguments.length; j < len; j ++){
// args.push(arguments[j]);
// }
return fn.apply(context, args.concat(Array.prototype.slice.call(arguments)));
};
};
}
// 获取当前js文件的路径
window.getCurrentJsPath = function() {
var doc = document,
a = {},
expose = +new Date(),
rExtractUri = /((?:http|https|file):\/\/.*?\/[^:]+)(?::\d+)?:\d+/,
isLtIE8 = ('' + doc.querySelector).indexOf('[native code]') === -1;
// FF,Chrome
if (doc.currentScript){
return doc.currentScript.src;
}
var stack;
try{
a.b();
}
catch(e){
stack = e.fileName || e.sourceURL || e.stack || e.stacktrace;
}
// IE10
if (stack){
var absPath = rExtractUri.exec(stack)[1];
if (absPath){
return absPath;
}
}
// IE5-9
for(var scripts = doc.scripts,
i = scripts.length - 1,
script; script = scripts[i--];){
if (script.className !== expose && script.readyState === 'interactive'){
script.className = expose;
// if less than ie 8, must get abs path by getAttribute(src, 4)
return isLtIE8 ? script.getAttribute('src', 4) : script.src;
}
}
};
window.encodeBase64 = function(str){
var c1, c2, c3;
var base64EncodeChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
var i = 0, len= str.length, string = '';
while (i < len){
c1 = str[i++] & 0xff;
if (i == len){
string += base64EncodeChars.charAt(c1 >> 2);
string += base64EncodeChars.charAt((c1 & 0x3) << 4);
string += "==";
break;
}
c2 = str[i++];
if (i == len){
string += base64EncodeChars.charAt(c1 >> 2);
string += base64EncodeChars.charAt(((c1 & 0x3) << 4) | ((c2 & 0xF0) >> 4));
string += base64EncodeChars.charAt((c2 & 0xF) << 2);
string += "=";
break;
}
c3 = str[i++];
string += base64EncodeChars.charAt(c1 >> 2);
string += base64EncodeChars.charAt(((c1 & 0x3) << 4) | ((c2 & 0xF0) >> 4));
string += base64EncodeChars.charAt(((c2 & 0xF) << 2) | ((c3 & 0xC0) >> 6));
string += base64EncodeChars.charAt(c3 & 0x3F)
}
return string
};