1. 禁止右键点击
$(document).ready(function(){ $(document).bind("contextmenu",function(e){ return false; });});
2. 隐藏搜索文本框文字
hide when clicked in the search field, the value.(example can be found below in the comment fields)
$(document).ready(function() {$("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); } });}
3. 在新窗口中打开链接
xhtml 1.0 strict doesn't allow this attribute in the code, so use this to keep the code valid.
$(document).ready(function() { //example 1: every link will open in a new window $('a[href^="http://"]').attr("target", "_blank"); //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 useopen link
4. 检测浏览器
注: 在版本jquery 1.4中，$.support 替换掉了$.browser 变量
$(document).ready(function() {// target firefox 2 and aboveif ($.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}});
5. 预加载图片
this piece of code will prevent the loading of all images, which can be useful if you have a site with lots of images.
$(document).ready(function() {jquery.preloadimages = function(){ for(var i = 0; i<arguments.length; jquery(?").attr("src", arguments[i]); }}// how to use$.preloadimages("image1.jpg");});
6. 页面样式切换
$(document).ready(function() { $("a.styleswitcher").click(function() { //swicth the link rel attribute with the value in a rel attribute $('link[rel=stylesheet]').attr('href' , $(this).attr('rel')); });// how to use// place this in your header// the linksdefault themered themeblue theme});
7. 列高度相同
如果使用了两个css列，使用此种方式可以是两列的高度相同。
$(document).ready(function() {function equalheight(group) { tallest = 0; group.each(function() { thisheight = $(this).height(); if(thisheight > tallest) { tallest = thisheight; } }); group.height(tallest);}// how to use$(document).ready(function() { equalheight($(".left")); equalheight($(".right"));});});
8. 动态控制页面字体大小
用户可以改变页面字体大小
$(document).ready(function() { // reset the font size(back to default) var originalfontsize = $('html').css('font-size'); $(".resetfont").click(function(){ $('html').css('font-size', originalfontsize); }); // increase the font size(bigger font0 $(".increasefont").click(function(){ var currentfontsize = $('html').css('font-size'); var currentfontsizenum = parsefloat(currentfontsize, 10); var newfontsize = currentfontsizenum*1.2; $('html').css('font-size', newfontsize); return false; }); // decrease the font size(smaller font) $(".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; });});
9. 返回页面顶部功能
for a smooth(animated) ride back to the top(or any location).
$(document).ready(function() {$('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// the linkgo to top});
10. 获得鼠标指针ｘｙ值
want to know where your mouse cursor is?
$(document).ready(function() { $().mousemove(function(e){ //display the x and y axis values inside the div with the id xy $('#xy').html("x axis : " + e.pagex + " | y axis " + e.pagey); });// how to use});
11.返回顶部按钮
你可以利用 animate 和 scrolltop 来实现返回顶部的动画，而不需要使用其他插件。
// back to top$('a.top').click(function () { $(document.body).animate({scrolltop: 0}, 800); return false;});back to top
改变scrolltop 的值可以调整返回距离顶部的距离，而 animate 的第二个参数是执行返回动作需要的时间(单位：毫秒)。
今天为大家先介绍一部分jquery技巧，更多相关教程请访问jquery视频教程！