each

The difference between assigning event handlers with bind() and each() in jQuery?

由 隐身守侯 提交于 2019-12-06 09:57:33
问题 can someone tell me what the difference between assigning event handlers using bind(): $(function(){ $('someElement') .bind('mouseover',function(e) { $(this).css({ //change color }); }) .bind('mouseout',function(e) { $(this).css({ //return to previous state }); }) .bind('click',function(e) { $(this).css({ //do smth. }); }) }); and using each() for the same task: $('someElement').each(function(){ $(this).mouseover(function(){$(this).css({/*change color*/}) .mouseout(function(){$(this).css({/

JQuery handles array out of index errors when $.each and array.splice(i) are kept together

由 醉酒当歌 提交于 2019-12-06 09:17:55
问题 Recently I was searching in internet for some code which can handle abandoned ajax/xhr calls. And this is what I found: $.xhrPool = []; $.ajaxSetup({ beforeSend: function (jqXHR) { $.xhrPool.push(jqXHR); }, complete: function (jqXHR) { var i = $.xhrPool.indexOf(jqXHR); if (i > -1) $.xhrPool.splice(i, 1); } }); $.xhrPool.abortAll = function () { $(this).each(function (i, jqXHR) { jqXHR.abort(); $.xhrPool.splice(i, 1);// This is the line which makes me confused. }); }; This code works fine ,

jquery .each objects

由 风流意气都作罢 提交于 2019-12-06 07:59:33
问题 i am building an jQuery plugin, but i want to use objects in the options var, how can i loop this with the jQuery each? plugin options var var defaults = { test: 'yes', //css/classes type: { minvalue: '100', maxvalue: '200', name: 'id1' }, type: { minvalue: '200', maxvalue: '300', name: 'id2' }, type: { minvalue: '300', maxvalue: '400', name: 'id3' } }; $.each(defaults, function(key, value) { alert(key + ': ' + value); }); 回答1: With your example it is a bit difficult to figure what exactly

KXO205 – Assignment 3

由 我是研究僧i 提交于 2019-12-06 06:54:46
KXO205 – Assignment 3 Page 1 of 6 KXO205 Dynamic Web Development AIEN-SHOU - 2019 Assignment 3: Dynamic Web Site Project Due Date & Time: Friday, 6 th December 2019: 9:00pm (Shanghai-time) Assignment weight: 30% (of Total Marks for the unit) Submission: Via MyLO Assignment Type: Group: 4 students in each group (minimum of 3). Students are free to choose who they join with. Group sign-up is available from the Assessment page of the KXO205 MyLO site. NOTE: Students who have not signed into a group by 9:00pm (Shanghai-time) Wednesday, 27th November 2019, will be assigned into a group without

Use a for-loop or a for-each loop? [closed]

由 给你一囗甜甜゛ 提交于 2019-12-06 06:39:30
问题 Closed . This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed 6 years ago . Should we prefer the for-each loop instead of the traditional for-loops? Is the while-loop advantageous? List<String> names = Arrays.asList("John", "Jeff", "Mary", "Elise"); //for-each loop for(String name: names){ log(name); } //traditional for-loop for(int index=0; index <

Populating Next Right Pointers in Each Node

由 女生的网名这么多〃 提交于 2019-12-06 05:38:20
描述： 　　填充每一个节点的下一个右侧指针，给定一个完美二叉树，其所有叶子节点都在同一层，每个父节点都有两个子节点。二叉树定义如下： 　　struct Node { 　　int val; 　　Node *left; 　　Node *right; 　　Node *next; 　　} 　　填充它的每个 next 指针，让这个指针指向其下一个右侧节点。如果找不到下一个右侧节点，则将 next 指针设置为 NULL。 　　初始状态下，所有 next 指针都被设置为 NULL。 解答： 　　看到该问题的描述，从图形上直观的来看，本题和二叉树的层次遍历是相关的。因为填充右侧节点的操作总是在统一层上进 行的。而二叉树的遍历总是分为递归和迭代算法两种，我们也尝试使用两种算法来解决问题。 　　首先使用递归的算法，递归算法的核心是找出所有操作的自相似性，因此我们观察对于每个节点的操作。如果当前的节点为空 则不进行任何操作。若当前的节点不为空，若其左子树存在的话，则右子树也是必然存在的，且其next指向其右子树。右子树的next 取值则取决于当前节点的next,若当前节点的next存在，则右子树的next为root->next->left。则按照此分析写出来的递归代码如下： class Solution { public: //首先为递归的写法，该道题为二叉树的层次遍历的应用 Node* connect

Using jQuery each to grab image height

由 蓝咒 提交于 2019-12-06 05:18:53
I have a bunch of images on a page. I'm trying to use jQuery to grab the height of each image and display it after the image. So here is my code: $(document).ready(function() { $(".thumb").each(function() { imageWidth = $(".thumb img").attr("width"); $(this).after(imageWidth); }); }); <div class="thumb"><img src="" border="0" class="thumb_img"></div> <div class="thumb"><img src="" border="0" class="thumb_img"></div> <div class="thumb"><img src="" border="0" class="thumb_img"></div> [...] My logic behind the jQuery is that I want to go through each "thumb" selector, assign the height of the img

Codeforces Round #603 (Div. 2) F. Economic Difficulties dp

由 只愿长相守 提交于 2019-12-06 04:29:04
F. Economic Difficulties An electrical grid in Berland palaces consists of 2 grids: main and reserve. Wires in palaces are made of expensive material, so selling some of them would be a good idea! Each grid (main and reserve) has a head node (its number is 1). Every other node gets electricity from the head node. Each node can be reached from the head node by a unique path. Also, both grids have exactly n nodes, which do not spread electricity further. In other words, every grid is a rooted directed tree on n leaves with a root in the node, which number is 1. Each tree has independent

Codeforces Round #603 (Div. 2)

由 风格不统一 提交于 2019-12-06 04:15:38
A. Sweet Problem You have three piles of candies: red, green and blue candies: the first pile contains only red candies and there are r r candies in it, the second pile contains only green candies and there are g g candies in it, the third pile contains only blue candies and there are b b candies in it. Each day Tanya eats exactly two candies of different colors. She is free to choose the colors of eaten candies: the only restriction that she can't eat two candies of the same color in a day. Find the maximal number of days Tanya can eat candies? Each day she needs to eat exactly two candies.

Jquery $.each selector

由 眉间皱痕 提交于 2019-12-06 03:45:56
问题 I would like to know what $.each() stands for in jquery, What is it selecting? Is there an equivalent in prototype? 回答1: $.each() isn't selecting anything. It is just a utility to iterate over a collection. When you do: $('someSelector').each(function() { // do something }); jQuery is internally calling: jQuery.each( this, callback, args ); ...with this representing the matched set. http://github.com/jquery/jquery/blob/master/src/core.js#L231 You could just as easily call it yourself manually
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