与其他Javascript类库冲突解决方案
$(document).ready(function()
{
var $jq = jQuery.noConflict();
$jq('#id').show();
});
使元素居屏幕中间位置
$(document).ready(function()
{
jQuery.fn.center = function ()
{
this.css("position","absolute");
this.css("top", ( $(window).height() - this.height() ) / 2+$(window).scrollTop() + "px");
this.css("left", ( $(window).width() - this.width() ) / 2+$(window).scrollLeft() + "px");
return this;
}
$("#id").center();
});
使整个DIV可点击
$(document).ready(function()
{
$("div").click(function()
{
window.location=$(this).find("a").attr("href"); return false;
});
// how to use
<DIV><A href="index.html">home</A></DIV>
});
jQuery延时加载功能view plaincopy to clipboardprint?
$(document).ready(function()
{
window.setTimeout(function()
{
}, 1000);
});
获得鼠标指针XY值
$(document).ready(function()
{
$().mousemove(function(e)
{
$('#XY').html("X Axis : " + e.pageX + " | Y Axis " + e.pageY);
});
// how to use
<DIV id=XY></DIV>
});
返回页面顶部功能
$(document).ready(function()
{
$('a[href*=#]').click(function()
{
if (location.pathname.replace(/^\//,'') == this.pathname.replace(/^\//,'')
&& location.hostname == this.hostname)
{
var $target = $(this.hash);
$target = $target.length && $target || $('[name=' + this.hash.slice(1) +']');
if ($target.length)
{
var targetOffset = $target.offset().top;
$('html,body').animate({scrollTop: targetOffset}, 900);
return false;
}
}
});
// how to use
<A name=top></A>
<A href="#top">go to top</A>
});
页面样式切换
$(document).ready(function()
{
$("a.Styleswitcher").click(function()
{
$('link[rel=stylesheet]').attr('href' , $(this).attr('rel'));
});
// how to use
<LINK href="default.css" type=text/css rel=stylesheet>
// the links
<A class=Styleswitcher href="#" rel=default.css>Default Theme</A>
<A class=Styleswitcher href="#" rel=red.css>Red Theme</A>
<A class=Styleswitcher href="#" rel=blue.css>Blue Theme</A>
});
预加载图片
$(document).ready(function()
{
jQuery.preloadImages = function()
{
for(var i = 0; i").attr("src", arguments[i]);
}
};
// how to use
$.preloadImages("image1.jpg");
});
禁止右键点击
$(document).ready(function()
{
$(document).bind("contextmenu",function(e)
{
return false;
});
});
用下面方法,可以简单又可靠的得到一个变量是否一个数组:
Object.prototype.toString.apply(value) === '[object Array]'