直接拿来用的15个jQuery代码片段

(function($) {  var cache = [];  // Arguments are image paths relative to the current page.  $.preLoadImages = function() {   var args_len = arguments.length;   for (var i = args_len; i--;) {    var cacheImage = document.createElement('img');    cacheImage.src = arguments[i];    cache.push(cacheImage);   }  } jQuery.preLoadImages("image1.gif", "/path/to/image2.png"); 

var scr = document.createElement('script'); scr.setAttribute('src', 'https://ajax.googleapis.com/ajax/libs/jquery/1.5.2/jquery.min.js'); document.body.appendChild(scr); scr.onload = function(){   $('div').attr('class', '').attr('id', '').css({     'margin' : 0,     'padding' : 0,     'width': '100%',     'clear':'both'   }); }; 

$(window).bind("load", function() {   // IMAGE RESIZE   $('#product_cat_list img').each(function() {     var maxWidth = 120;     var maxHeight = 120;     var ratio = 0;     var width = $(this).width();     var height = $(this).height();     if(width > maxWidth){       ratio = maxWidth / width;       $(this).css("width", maxWidth);       $(this).css("height", height * ratio);       height = height * ratio;     }     var width = $(this).width();     var height = $(this).height();     if(height > maxHeight){       ratio = maxHeight / height;       $(this).css("height", maxHeight);       $(this).css("width", width * ratio);       width = width * ratio;     }   });   //$("#contentpage img").show();   // IMAGE RESIZE }); 

// Back To Top $(document).ready(function(){   $('.top').click(function() {     $(document).scrollTo(0,500);   }); });  //Create a link defined with the class .top <a href="#" class="top">Back To Top</a> 

var accordion = {    init: function(){       var $container = $('#accordion');       $container.find('li:not(:first) .details').hide();       $container.find('li:first').addClass('active');       $container.on('click','li a',function(e){          e.preventDefault();          var $this = $(this).parents('li');          if($this.hasClass('active')){              if($('.details').is(':visible')) {                 $this.find('.details').slideUp();              } else {                 $this.find('.details').slideDown();              }          } else {              $container.find('li.active .details').slideUp();              $container.find('li').removeClass('active');              $this.addClass('active');              $this.find('.details').slideDown();          }       });    } }; 

var nextimage = "/images/some-image.jpg"; $(document).ready(function(){ window.setTimeout(function(){ var img = $("").attr("src", nextimage).load(function(){ //all done }); }, 100); }); 

$(function(){ $("select#ctlJob").change(function(){ $.getJSON("/select.php",{id: $(this).val(), ajax: 'true'}, function(j){ var options = ''; for (var i = 0; i < j.length; i++) { options += ' ' + j[i].optionDisplay + ' '; } $("select#ctlPerson").html(options); }) }) }) 

// Safe Snippet $("img").error(function () {   $(this).unbind("error").attr("src", "missing_image.gif"); }); // Persistent Snipper $("img").error(function () {   $(this).attr("src", "missing_image.gif"); }); 

$(document).ready(function(){   $(".thumbs img").fadeTo("slow", 0.6); // This sets the opacity of the thumbs to fade down to 60% when the page loads   $(".thumbs img").hover(function(){     $(this).fadeTo("slow", 1.0); // This should set the opacity to 100% on hover   },function(){     $(this).fadeTo("slow", 0.6); // This should set the opacity back to 60% on mouseout   }); }); 

function clearForm(form) {  // iterate over all of the inputs for the form  // element that was passed in  $(':input', form).each(function() {   var type = this.type;   var tag = this.tagName.toLowerCase(); // normalize case   // it's ok to reset the value attr of text inputs,   // password inputs, and textareas   if (type == 'text' || type == 'password' || tag == 'textarea')    this.value = "";   // checkboxes and radios need to have their checked state cleared   // but should *not* have their 'value' changed   else if (type == 'checkbox' || type == 'radio')    this.checked = false;   // select elements need to have their 'selectedIndex' property set to -1   // (this works for both single and multiple select elements)   else if (tag == 'select')    this.selectedIndex = -1;  }); }; 

$(document).ready(function() {  $('form').submit(function() {   if(typeof jQuery.data(this, "disabledOnSubmit") == 'undefined') {    jQuery.data(this, "disabledOnSubmit", { submited: true });    $('input[type=submit], input[type=button]', this).each(function() {     $(this).attr("disabled", "disabled");    });    return true;   }   else   {    return false;   }  }); }); 

//change event on password1 field to prompt new input $('#password1').change(function() {     //dynamically create new input and insert after password1     $("#password1").append(""); });

blah blah blah. link The following lines of jQuery will make the entire div clickable: $(".myBox").click(function(){ window.location=$(this).find("a").attr("href"); return false; });  

var maxHeight = 0; $("div").each(function(){   if ($(this).height() > maxHeight) { maxHeight = $(this).height(); } }); $("div").height(maxHeight); 

var loading = false; $(window).scroll(function(){   if((($(window).scrollTop()+$(window).height())+250)>=$(document).height()){     if(loading == false){       loading = true;       $('#loadingbar').css("display","block");       $.get("load.php?start="+$('#loaded_max').val(), function(loaded){         $('body').append(loaded);         $('#loaded_max').val(parseInt($('#loaded_max').val())+50);         $('#loadingbar').css("display","none");         loading = false;       });     }   } }); $(document).ready(function() {   $('#loaded_max').val(50); });