each

COMP 2406 – F19

由 断了今生、忘了曾经 提交于 2019-12-05 00:28:18
COMP 2406 – F19 – A4 Due Friday, November 22nd at 11:59 PM Assignment 4 Trivia Quiz Builder Submit a single zip file called assignment4.zip. Your submission MUST contain a package.json file that allows your assignment to be built using npm install. You should not include the node_modules folder or database files in your submission. You may assume that the TA will have the Mongo.db daemon running and that the TA will have run database-initializer.js before running your server. This assignment has 100 marks. Read the marking scheme posted on cuLearn for details. Assignment Background In this

$.each 和$(selector).each()的区别

由 南笙酒味 提交于 2019-12-04 22:59:36
译自官方手册: jQuery.each() 对数组或对对象内容进行循环处理 jQuery.each( collection, callback(indexInArray, valueOfElement) ) collection 遍历的对象或数组 callback(indexInArray, valueOfElement) 在每一个对象上调用的函数 说明 一个通用的遍历函数 , 可以用来遍历对象和数组. 数组和含有一个length属性的伪数组对象 (伪数组对象如function的arguments对象)以数字索引进行遍历,从0到length-1, 其它的对象通过的属性进行遍历. $.each()与 $(selector).each() 不同, 后者专用于jquery对象的遍历, 前者可用于遍历任何的集合(无论是数组或对象),如果是数组,回调函数每次传入数组的索引和对应的值(值亦可以通过this 关键字获取,但javascript总会包装this 值作为一个对象—尽管是一个字符串或是一个数字),方法会返回被遍历对象的第一参数 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ //例子:———传入数组 <!DOCTYPE html> <html> <head> <script src=

how to dynamically exit a jquery $.each()?

由 我只是一个虾纸丫 提交于 2019-12-04 22:18:36
i have a list of images which i am getting through ajax and then using jquery $.each() i loop through the images and display a image one after the other after an interval of one second. I want the user to be able click on a stop button and so that the user can stop at a particular image if he wants to. So i need to dynamically exit $.each() when the user clicks on the stop button. Is it possible to do it? Adeel You can use return false to break out of each() loops early. Example: <script> $("button").click(function () { $("div").each(function (index, domEle) { // domEle == this $(domEle).css(

Using .each on dynamic objects in jQuery?

由 醉酒当歌 提交于 2019-12-04 22:14:51
There are lots of questions that seem to be asking this, but in the end all they want is to attach .click events and not .each and so the generally accepted answer in all of them include $("body").on("click", ".selector", function(){}); and this is definitely not what I want. I have some generated inputs and I need to change the value of each one at the same time. Normally I would $(".inputs").each(function(){$(this).val("new-value")}; or something along those lines, however, I can't because of the dynamic aspect. So how would you do a $("body").on("each", ".inputs", function(){}); ? o_O

perl 转置矩阵

由 不问归期 提交于 2019-12-04 20:59:04
这里提供一个转置矩阵的perl脚本，R语言中的t()函数同样也能实现转置 1 use strict; 2 3 open A,"$ARGV[0]"; 4 5 my %ha; 6 my $head=<A>; 7 chomp($head); 8 my @tag=split /\s+/,$head; 9 10 while(<A>){ 11 chomp; 12 my @each=split; 13 for(my $i=0;$i<@each;$i++){ 14 $ha{$tag[$i]}.=$each[$i]."\t"; 15 } 16 } 17 18 close A; 19 20 foreach my $k(@tag){ 21 print "$k\t$ha{$k}\n"; 22 } 来源： https://www.cnblogs.com/mmtinfo/p/11883511.html

Grails/GSP: break out of <g:each>

由 佐手、 提交于 2019-12-04 17:58:21
Is there a way to break out of a <g:each>? I have a page wherein I'm iterating through a list and I have to make sure that a checkbox is checked if that was the value stored in DB. To make it a little clearer, please consider something like: <g:each in=${list1}> <g:each in=${list2}> <g:if test="${list1.id == list2.id}"> <input type="checkbox" ... checked="checked" /> </if> </g:each> ... </g:each> where list1 is, say Domain1.list() (i.e. ALL possible values) and list2 is Domain2.find(...) (i.e. SELECTED values) In the g:each, I need to display ALL of list1 (hence, the "..." after the inner each

jQuery: Looping through object properly?

由 谁说我不能喝 提交于 2019-12-04 16:56:58
问题 I am trying to loop through the below shown JS object with the following code snippet, while needing to fetch both the index key as well as the inner object. How on earth should I do this, as the following doesn't work? The object: ({ prop_1:["1", "2"], prop_2:["3", "4"]}) My code: $.each(myObject, function(key,valueObj){ alert(key + "/" + valueObj.toSource() ); }); Expected output: prop_1 / (["1", "2"]) 回答1: The inner object you're fetching fine, valueObj is the array, it just has no method

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

由 泪湿孤枕 提交于 2019-12-04 16:56:40
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 , but one line in it confuses me, I doubt that there is some logical error, but somehow works perfect.

【kuangbin带你飞】 MST专题

由 我的未来我决定 提交于 2019-12-04 16:28:41
唉，被班级合唱和复变考试搞得心力交瘁。新算法学不进去，更新下吧 A - Til the Cows Come Home The Head Elder of the tropical island of Lagrishan has a problem. A burst of foreign aid money was spent on extra roads between villages some years ago. But the jungle overtakes roads relentlessly, so the large road network is too expensive to maintain. The Council of Elders must choose to stop maintaining some roads. The map above on the left shows all the roads in use now and the cost in aacms per month to maintain them. Of course there needs to be some way to get between all the villages on maintained roads, even if the route is not

Get href attribute on jQuery

由 时光毁灭记忆、已成空白 提交于 2019-12-04 16:09:52
问题 I have some table rows <tr class="b_row"> <td> <div class="cpt"> <h2> <a href="/ref/ref/1.html">example</a> </h2> </div> </td> </tr> <!--more elements --> <tr class="b_row"> <td> <div class="cpt"> <h2> <a href="/ref/two/23.html">example N</a> </h2> </div> </td> </tr> I need to get hyperlinks in attribute. I use this script function openAll() { $("tr.b_row").each(function(){ var a_href = $('div.cpt').find('h2 a').attr('href'); alert ("Href is: " + a_href); } Problem: variable a_href is always
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