angularjs-ng-repeat | 易学教程

Update an Angular variable in the view

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问题 I would like my output to read 0 01 012 0123 01234 etc... I expected this simple code I wrote to do the trick, but instead it prints 01111111111 011111111111 02222222222 022222222222 03333333333 033333333333 04444444444 044444444444 05555555555 055555555555 06666666666 066666666666 Why is this happening? This is my Angular code: <div ng-app="App" ng-controller="ctrl"> <div ng-repeat="num in [1, 2, 3, 4, 5, 6]"> <label>{{previousNumber}}</label> {{previousNumber = (previousNumber + "" + num)}}

Angular ng-repeat cache (avoid re-rendering on state change)

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问题 We have huge rendering spikes with ng-repeat in Angular application. Main page shows a huge list of cover images ("::" and "track by" are in place). On first load it works acceptable. But if user changes the state (we use UI-Router) and goes back to the home page afterwards then it is about 2s delay on desktop and up to 10 sec delay on mobile. It should be instant instead: all json queries are cached. And ng-repeat already rendered that content once. As temporary solution we use angular ux

{{$index}} of ng-repeat computed after linker function of angular directive. $compile it?

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问题 html <div repeater ng-repeat='item in items' class='first' id = '{{$index}}' > {{item}} </div> angularjs directive:- angular.module('time', []) .directive('repeater', function() { var linkFn = function(scope, element, attrs){ var id = $(element).attr('id'); alert(id); // {{$index}} } ... dynamic id created inside ng-repeat, when evoked inside directive displays as {{$index}} instead of value = 0, 1, 2 ... How do you ensure when Linker function in directive executes the dynamic ids are used? I

Problems parsing a JSON response using AngularJS

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问题 I am new using AngularJS and I am having an issue parsing a json response. This is the HTML code I am using: <!DOCTYPE html> <html ng-app> <head> <script src="@routes.Assets.at("javascripts/angular.min.js")" type="text/javascript"</script> <script src="@routes.Assets.at("javascripts/carLibrary.js")" type="text/javascript"></script> </head> <body> <div ng-controller="CarCtrl"> <ul> <li ng-repeat="car in cars"> {{car.name}} <p>{{car.speed}}</p> </li> </ul> <hr> <p>{{response}}</p> </div> </body

Split for ng repeat item?

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问题 Simple question- if I have this in my controller: $scope.somedata = 'Item 1, Item 2'; // set from something else is there a way to split somedata for my view in a ngRepeat expression? Something like: <div ng-repeat="item in somedata | split(',')">{{item}}</div> which doesnt work... Or do I have to do $scope.somedata = 'Item 1, Item 2'; // set from something else $scope.items = somedata.split(','); and then <div ng-repeat="item in items>{{item}}</div> I think I'm not really understanding what

AngularJS : Pass $scope variable as directive attribute

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问题 I'm trying to pass the $scope variable values to a custom directive as attribute, but it's not working. Here is the HTML code: <ul ng-repeat="q in questions"> <li> {{q.question}} <check-list name="{{q.id}}"></check-list> </li> </ul> The directive is <check-list name={{q.id}}></check-list> , and here is the directive code : app.directive('checkList',function(){ return { restrict:'E', template: function(elem,attrs){ console.log(attrs.name); return '</br> <input type="radio" /> Yes </br> <input

AngularJS : how to create DOM and bind to a model based on arbitrary hierarchical data

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AngularJS : how to create DOM and bind to a model based on arbitrary hierarchical data

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AngularJS : Replicate div on click of button

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问题 I want to replicate the text fields(div) present in image every time the user click on '+' button. 回答1: If I understood your question properly , pls refer the below code . Template <div ng-app="myapp" ng-controller="myCtrl"> <div ng-repeat="item in items"> <input type="text" placeholder="name"> <input type="text" placeholder="email"> <button ng-click="add()">+</button> <p>Some text some text some text</p> </div> </div> controller var app = angular.module('myapp',[]); app.controller('myCtrl',[

How to repeat “key” in ngRepeat one time only (AngularJS)

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问题 The problem is leaving in the JSON Array response from the Backend/DB. I'm getting the response of the database in the correct json format: [ 0: { "Grade": 100, "AB001": 1, "AB002": 0, "AB003": 9, "AB004": 5 }, 1: { "Grade": 98, "AB001": 3, "AB002": 0, "AB003": 0, "AB004": 0 } ... ] (10 objects as result) Thus displayed in the Firebug console, when you click the Response of the GET Request. To retrieve the keys who are represented in double quotes I've used the ngRepeat directive in my view