跨瀏覽器基礎事件
代碼如下:
//跨瀏覽器添加事件
function addEvent(obj, type, fn) {
if (obj.addEventListener) {
obj.addEventListener(type, fn, false);
} else if (obj.attachEvent) {
obj.attachEvent('on' + type, function () {
fn.call(obj);
});
}
}
//跨瀏覽器基礎事件
function removeEvent(obj, type, fn) {
if (obj.removeEventListener) {
obj.removeEventListener(type, fn, false);
} else if (obj.detachEvent) {
obj.detachEvent('on' + type, fn);
}
}
//跨瀏覽器阻止默認行為
function preDef(evt) {
var e = evt || window.event;
if (e.preventDefault) {
e.preventDefault();
} else {
e.returnValue = false;
}
}
//跨瀏覽器獲取目標對象
function getTarget(evt) {
if (evt.target) { //W3C
return evt.target;
} else if (window.event.srcElement) { //IE
return window.event.srcElement;
}
}
//跨瀏覽器獲取字符編碼
function getCharCode(evt) {
var e = evt || window.event;
if (typeof e.charCode == 'number') {
return e.charCode;
} else {
return e.keyCode;
}
}
瀏覽器檢測
代碼如下:
var client = function(){
//rendering engines
var engine = {
ie: 0,
gecko: 0,
webkit: 0,
khtml: 0,
opera: 0,
//complete version
ver: null
};
//browsers
var browser = {
//browsers
ie: 0,
firefox: 0,
safari: 0,
konq: 0,
opera: 0,
chrome: 0,
//specific version
ver: null
};
//platform/device/OS
var system = {
win: false,
mac: false,
x11: false,
//mobile devices
iphone: false,
ipod: false,
ipad: false,
ios: false,
android: false,
nokiaN: false,
winMobile: false,
//game systems
wii: false,
ps: false
};
//detect rendering engines/browsers
var ua = navigator.userAgent;
if (window.opera){
engine.ver = browser.ver = window.opera.version();
engine.opera = browser.opera = parseFloat(engine.ver);
} else if (/AppleWebKit//(/S+)/.test(ua)){
engine.ver = RegExp["$1"];
engine.webkit = parseFloat(engine.ver);
//figure out if it's Chrome or Safari
if (/Chrome//(/S+)/.test(ua)){
browser.ver = RegExp["$1"];
browser.chrome = parseFloat(browser.ver);
} else if (/Version//(/S+)/.test(ua)){
browser.ver = RegExp["$1"];
browser.safari = parseFloat(browser.ver);
} else {
//approximate version
var safariVersion = 1;
if (engine.webkit < 100){
safariVersion = 1;
} else if (engine.webkit < 312){
safariVersion = 1.2;
} else if (engine.webkit < 412){
safariVersion = 1.3;
} else {
safariVersion = 2;
}
browser.safari = browser.ver = safariVersion;
}
} else if (/KHTML//(/S+)/.test(ua) || /Konqueror//([^;]+)/.test(ua)){
engine.ver = browser.ver = RegExp["$1"];
engine.khtml = browser.konq = parseFloat(engine.ver);
} else if (/rv:([^/)]+)/) Gecko///d{8}/.test(ua)){
engine.ver = RegExp["$1"];
