在桌面浏览器中加载jQuery脚本,但不能在移动设备中加载 [英] Load jQuery script in desktop browser, but not mobile
问题描述
我想在桌面浏览器而不是移动浏览器中加载特定的jQuery脚本/功能.目前,该脚本在移动浏览器上运行非常慢,但在台式机浏览器上运行良好.
I want to load a particular jQuery script/function in desktop browsers, but not mobile browsers. At the moment, the script runs very slow on mobile browsers, but works fine on desktop browsers.
该功能是一个平滑滚动插件,因此,当用户单击链接时,页面将平滑滚动到同一页面上的锚点.它不必在移动浏览器上平滑滚动-它太慢了,通常不起作用.
The function in question is a smooth scrolling plugin, so that when a user clicks a link, the page scrolls smoothly to the anchor on the same page. It is not necessary for it to scroll smoothly on mobile browsers - it is too slow, and often doesn't work.
我需要在下面的代码中添加些什么,以确保在台式机浏览器中仍然可以正常执行该代码,而在移动设备(尤其是iPad/iPhone/iPod)中仍可以正常执行该代码?
What would I need to add to my code below to ensure that it is still executed as normal in desktop browsers, but not mobile (particularly iPad/iPhone/iPod)?
<script>!window.jQuery && document.write(unescape('%3Cscript src="js/lib/jquery/jquery.js"%3E%3C/script%3E'));</script>
<script src="js/css_browser_selector.js"></script>
<script src="js/src/jquery.smooth-scroll.js">
</script>
<script src="js/lib/jquery.ba-bbq.js"></script>
<script>
$(document).ready(function() {
$('a[href*="#"]').live('click', function() {
if ( this.hash ) {
$.bbq.pushState( '#/' + this.hash.slice(1) );
return false;
}
});
$(window).bind('hashchange', function(event) {
var tgt = location.hash.replace(/^#\/?/,'');
if ( document.getElementById(tgt) ) {
$.smoothScroll({scrollTarget: '#' + tgt});
}
});
$(window).trigger('hashchange');
});
</script>
推荐答案
jsFiddle Demo
寻找touch
的存在,如果它不存在,那么您很有可能会使用台式机:
Look for the existence of touch
, if it is not present then you are more than likely dealing with a desktop:
编辑:显然不赞成使用我原来的try/catch方法( https://stackoverflow.com/a/4819886/1026459 )
edit: my original try/catch approach was apparently deprecated ( https://stackoverflow.com/a/4819886/1026459 )
$(document).ready(function() {
var isDesktop = (function() {
return !('ontouchstart' in window) // works on most browsers
|| !('onmsgesturechange' in window); // works on ie10
})();
//edit, if you want to use this variable outside of this closure, or later use this:
window.isDesktop = isDesktop;
if( isDesktop ){ /* desktop things */ }
});
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