1. 禁止右键点击
$(document).ready(function(){ $(document).bind("contextmenu",function(e){ return false; });});$(document).ready(function() {$("input.text1").val("Enter your search text here"); textFill($(‘input.text1‘));}); function textFill(input){ //input focus text function var originalvalue = input.val(); input.focus( function(){ if( $.trim(input.val()) == originalvalue ){ input.val(‘‘); } }); input.blur( function(){ if( $.trim(input.val()) == ‘‘ ){ input.val(originalvalue); } });}$(document).ready(function() { //Example 1: Every link will open in a new window //Example 2: Links with the rel="external" attribute will only open in a new window $(‘a[@rel$=‘external‘]‘).click(function(){ this.target = "_blank"; });});// how to use$(document).ready(function() {// Target Firefox 2 and aboveif ($.browser.mozilla && $.browser.version >= "1.8" ){ // do something}// Target Safariif( $.browser.safari ){ // do something}// Target Chromeif( $.browser.chrome){ // do something}// Target Caminoif( $.browser.camino){ // do something}// Target Operaif( $.browser.opera){ // do something}// Target IE6 and belowif ($.browser.msie && $.browser.version <= 6 ){ // do something}// Target anything above IE6if ($.browser.msie && $.browser.version > 6){ // do something}});$(document).ready(function() {jQuery.preloadImages = function(){ for(var i = 0; i<ARGUMENTS.LENGTH; jQuery(?<img { i++)>").attr("src", arguments[i]); }}// how to use$.preloadImages("image1.jpg");});$(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; $(‘html,body‘) .animate({scrollTop: targetOffset}, 900); return false; } } });// how to use// place this where you want to scroll to<A name=top></A>// the link<A href="#top">go to top</A>});$(document).ready(function() { $().mousemove(function(e){ //display the x and y axis values inside the div with the id XY $(‘#XY‘).html("X Axis : " + e.pageX + " | Y Axis " + e.pageY); });// how to use<DIV id=XY></DIV>});有时候你需要确保图片完成加载完成以便执行后面的操作：$(‘img‘).load(function () { console.log(‘image load successful‘);});$(‘img‘).on(‘error‘, function () { $(this).prop(‘src‘, ‘img/broken.png‘);});$(document).ready(function() { window.setTimeout(function() { // do something }, 1000);});原文：http://www.cnblogs.com/sjqq/p/6362373.html