开发中可能会用到的jQuery小技巧_jquery

$(document).ready(function() {
//catch the right-click context menu
$(document).bind("contextmenu",function(e) {
//warning prompt - optional
alert("No right-clicking!");

//delete the default context menu
return false;
});
});

$(document).ready(function() {
//find the current font size
var originalFontSize = $('html').css('font-size');

//Increase the text size
$(".increaseFont").click(function() {
var currentFontSize = $('html').css('font-size');
var currentFontSizeNumber = parseFloat(currentFontSize, 10);

var newFontSize = currentFontSizeNumber*1.2;
$('html').css('font-size', newFontSize);
return false;
});

//Decrease the Text Size
$(".decreaseFont").click(function() {
var currentFontSize = $('html').css('font-size');
var currentFontSizeNum = parseFloat(currentFontSize, 10);

var newFontSize = currentFontSizeNum*0.8;
$('html').css('font-size', newFontSize);
return false;
});

// Reset Font Size
$(".resetFont").click(function(){
$('html').css('font-size', originalFontSize);
});
});

$(document).ready(function() {
//select all anchor tags that have http in the href
//and apply the target=_blank
$("a[href^='http']").attr('target','_blank');
});

$(document).ready(function() {
$("a.cssSwap").click(function() {
//swap the link rel attribute with the value in the rel
$('link[rel=stylesheet]').attr('href' , $(this).attr('rel'));
});
});

$(document).ready(function() {
//when the id="top" link is clicked
$('#top').click(function() {
//scoll the page back to the top
$(document).scrollTo(0,500);
}
});

$().mousemove(function(e){
//display the x and y axis values inside the P element
$('p').html("X Axis : " + e.pageX + " | Y Axis " + e.pageY);
});

$(document).ready(function() {
$().mousemove(function(e){
$('# MouseCoordinates ').html("X Axis Position = " + e.pageX + " and Y Axis Position = " + e.pageY);
});

jQuery.preloadImagesInWebPage = function() {
for(var ctr = 0; ctrjQuery("").attr("src", arguments[ctr]);
}
}

$.preloadImages("image1.gif", "image2.gif", "image3.gif");
判断图片是否已加载：
$('#imageObject').attr('src', 'image1.gif').load(function() {
alert('The image has been loaded…');
});