$('#content').on("mousewheel DOMMouseScroll", function (event) {
// chrome & ie || // firefox
var delta = (event.originalEvent.wheelDelta && (event.originalEvent.wheelDelta > 0 ? 1 : -1)) ||
(event.originalEvent.detail && (event.originalEvent.detail > 0 ? -1 : 1));
if (delta > 0) {
console.log('mousewheel top');
} else if (delta < 0) {
console.log('mousewheel bottom');
}
});
1、JavaScript实现
X:<input id="xxx" type="text" /> Y:<input id="yyy" type="text" />
function mousePosition(ev){
if(ev.pageX || ev.pageY){
return {x:ev.pageX, y:ev.pageY};
}
return {
x:ev.clientX + document.body.scrollLeft - document.body.clientLeft,
y:ev.clientY + document.body.scrollTop - document.body.clientTop
};
}
function mouseMove(ev){
ev = ev || window.event;
var mousePos = mousePosition(ev);
document.getElementById('xxx').value = mousePos.x;
document.getElementById('yyy').value = mousePos.y;
}
document.onmousemove = mouseMove;
2、jQuery实现
$('#ele').click(function(event){
//获取鼠标在图片上的坐标
console.log('X：' + event.offsetX+' Y:' + event.offsetY);
//获取元素相对于页面的坐标
console.log('X：'+$(this).offset().left+' Y:'+$(this).offset().top);
});
1、HTML实现
<body ontouchmove="event.preventDefault()" >
2、JavaScript实现
document.addEventListener('touchmove', function(event) {
event.preventDefault();
});
// JavaScript
document.getElementById('btn').addEventListener('click', function (event) {
event = event || window.event；
if (event.preventDefault){
// W3C
event.preventDefault();
} else{
// IE
event.returnValue = false;
}
}, false);
// jQuery
$('#btn').on('click', function (event) {
event.preventDefault();
});
// JavaScript
document.getElementById('btn').addEventListener('click', function (event) {
event = event || window.event；
if (event.stopPropagation){
// W3C
event.stopPropagation();
} else{
// IE
event.cancelBubble = true;
}
}, false);
// jQuery
$('#btn').on('click', function (event) {
event.stopPropagation();
});
function isSupportSVG() {
var SVG_NS = 'http://www.w3.org/2000/svg';
return !!document.createElementNS &&!!document.createElementNS(SVG_NS, 'svg').createSVGRect;
}
console.log(isSupportSVG());
function isSupportCanvas() {
if(document.createElement('canvas').getContext){
return true;
}else{
return false;
}
}
console.log(isSupportCanvas());
function isWeiXinClient() {
var ua = navigator.userAgent.toLowerCase();
if (ua.match(/MicroMessenger/i)=="micromessenger") {
return true;
} else {
return false;
}
}
alert(isWeiXinClient());
var browser = {
versions: function() {
var u = navigator.userAgent;
return {
trident: u.indexOf('Trident') > -1, //IE内核
presto: u.indexOf('Presto') > -1, //opera内核
webKit: u.indexOf('AppleWebKit') > -1, //苹果、谷歌内核
gecko: u.indexOf('Firefox') > -1, //火狐内核Gecko
mobile: !!u.match(/AppleWebKit.*Mobile.*/), //是否移动终端
ios: !!u.match(/(i[^;]+;( U;)? CPU.+Mac OS X/), //ios
android: u.indexOf('Android') > -1 || u.indexOf('Linux') > -1, //android
iPhone: u.indexOf('iPhone') > -1 , //iPhone
iPad: u.indexOf('iPad') > -1, //iPad
webApp: u.indexOf('Safari') > -1 //Safari
};
}
}
if (browser.versions.mobile() || browser.versions.ios() || browser.versions.android() || browser.versions.iPhone() || browser.versions.iPad()) {
alert('移动端');
}
var browser={
versions:function(){
var u = navigator.userAgent, app = navigator.appVersion;
var sUserAgent = navigator.userAgent;
return {
trident: u.indexOf('Trident') > -1,
presto: u.indexOf('Presto') > -1,
isChrome: u.indexOf("chrome") > -1,
isSafari: !u.indexOf("chrome") > -1 && (/webkit|khtml/).test(u),
isSafari3: !u.indexOf("chrome") > -1 && (/webkit|khtml/).test(u) && u.indexOf('webkit/5') != -1,
webKit: u.indexOf('AppleWebKit') > -1,
gecko: u.indexOf('Gecko') > -1 && u.indexOf('KHTML') == -1,
mobile: !!u.match(/AppleWebKit.*Mobile.*/),
ios: !!u.match(/(i[^;]+;( U;)? CPU.+Mac OS X/),
android: u.indexOf('Android') > -1 || u.indexOf('Linux') > -1,
iPhone: u.indexOf('iPhone') > -1,
iPad: u.indexOf('iPad') > -1,
iWinPhone: u.indexOf('Windows Phone') > -1
};
}()
}
if(browser.versions.mobile || browser.versions.iWinPhone){
window.location = "http:/www.baidu.com/m/";
}
function getInternet(){
if(navigator.userAgent.indexOf("MSIE")>0) {
return "MSIE"; //IE浏览器
}
if(isFirefox=navigator.userAgent.indexOf("Firefox")>0){
return "Firefox"; //Firefox浏览器
}
if(isSafari=navigator.userAgent.indexOf("Safari")>0) {
return "Safari"; //Safan浏览器
}
if(isCamino=navigator.userAgent.indexOf("Camino")>0){
return "Camino"; //Camino浏览器
}
if(isMozilla=navigator.userAgent.indexOf("Gecko/")>0){
return "Gecko"; //Gecko浏览器
}
}