javascript-framework | 易学教程

jquery jqgrid propery with dot operator

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问题 I have a json with a property having dot "." operator in it. When im trying to render my grid, it comes up as blank (without any errors). Here's my JSON: { "total":1, "page":1, "records":2, "rows":[{ "id":2110040, "cell":{ "function.code":"dsadad", "service.name":"dsadasda" } }, { "id":2115040, "cell":{ "function.code":"iuiyuiy", "service.name":"iyuiyuiy" } } ] } this is my colModel colModel : [ { name : 'service.name', search : 'true', editable : true, //index : 'service.name', width : 200,

Accessibility and all these JavaScript frameworks

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I've been investigating a few of the JavaScript frameworks such as Backbone.js and Batman.js for a while and whilst I really like them, I have one niggling thing that I keep coming back to. That issue is accessibility. As a web developer I've always tried to make my websites and applications with accessibility in mind, especially using the idea of progressive enhancement. Clearly out of the box these new JS frameworks don't gracefully degrade, so I was wondering what are other developers thoughts on this issue and what are you doing about it. After all the accessibility of a website / app isn

What is the difference between React Native and React?

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问题 I have started to learn React out of curiosity and wanted to know the difference between React and React Native - though could not find a satisfactory answer using Google. React and React Native seems to have the same format. Do they have completely different syntax? 回答1: ReactJS is a JavaScript library, supporting both front-end web and being run on a server, for building user interfaces and web applications. React Native is a mobile framework that compiles to native app components, allowing

Pass variables to AngularJS controller, best practice?

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I am brand new to AngularJS and like what I've seen so far, especially the model / view binding. I'd like to make use of that to construct a simple "add to basket" piece of functionality. This is my controller so far: function BasketController($scope) { $scope.products = []; $scope.AddToBasket = function (Id, name, price, image) { ... }; } And this is my HTML: <a ng-click="AddToBasket('237', 'Laptop', '499.95', '237.png')">Add to basket</a> Now this works but I highly doubt this is the right way to create a new product object in my model. However this is where my total lack of AngularJS

jQuery: Check if div with certain class name exists

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Using jQuery I'm programmatically generating a bunch of div 's like this: <div class="mydivclass" id="myid1">Some Text1</div> <div class="mydivclass" id="myid2">Some Text2</div> Somewhere else in my code I need to detect if these DIVs exist. The class name for the divs is the same but the ID changes for each div. Any idea how to detect them using jQuery? You can simplify this by checking the first object that is returned from JQuery like so: if ($(".mydivclass")[0]){ // Do something if class exists } else { // Do something if class does not exist } In this case if there is a truthy value at

Angular JS ng-repeat consumes more browser memory

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问题 I have the following code <table> <thead><td>Id</td><td>Name</td><td>Ratings</td></thead> <tbody> <tr ng-repeat="user in users"> <td>{{user.id}}</td> <td>{{user.name}}</td> <td><div ng-repeat="item in items">{{item.rating}}</div></td> </tr> </tbody> </table> users is an array of user objects with only id and name. number of user objects in array - 150 items is an array of item objects with only id and rating. number of item objects in array - 150 When i render this in browser, it takes about

How to generate UL Li list from string array using jquery?

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问题 I have string array like 'United States', 'Canada', 'Argentina', 'Armenia', 'Aruba', 'Australia', 'Austria', 'Azerbaijan', 'Bahamas', 'Bangladesh', 'Belarus', 'Belgium'**, ... etc. I want create a dynamic list from string array like below:- <ul class="mylist" style="z-index: 1; top: 474px; left: 228px; display: none; width: 324px;" > <li class="ui-menu-item" role="menuitem"> <a class="ui-all" tabindex="-1"> United States </a> </li> <li class="ui-menu-item" role="menuitem"> <a class="ui-all"

Ways to save Backbone.js model data?

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I am more into front end development and have recently started exploring Backbone.js into my app. I want to persist the model data to the server. Could you please explain me the various way to save the Model data (using json format). I am using Java on server side. Also I have mainly seen REST being used to save data. As i am more into front end dev, i am not aware of REST and other similar stuff. It would be great if someone could please explain me the process with some simple example. jmk2142 Basically Models have a property called attributes which are the various values a certain model may

How to get an element by its href in jquery?

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问题 I want to get an element by its href attribute in jquery or javascript. Is that possible? 回答1: Yes, you can use jQuery's attribute selector for that. var linksToGoogle = $('a[href="http://google.com"]'); Alternatively, if your interest is rather links starting with a certain URL, use the attribute-starts-with selector: var allLinksToGoogle = $('a[href^="http://google.com"]'); 回答2: If you want to get any element that has part of a URL in their href attribute you could use: $( 'a[href*="google

how to select all class except the clicked element in JQuery?

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问题 I have a website developed on Drupal. I use a module called collapsiblock (it is basicly a JQuery plugin) to achieve accordion like effect. It is working fine with me (although it is in Beta). But I want to modify it so that when the user clicks on one item of the accordion the other items will collapsed. In its current stats, it is working in a way that when the user click on one item, it will check if the item is already collapsed or expanded and it will make the item the opposite. That