I have an angular directive that loads all the countries in the world into an md-select. My page can have a lot of these countries selects.
My problem is that, when I have a lot of these directives on the page, the page slows down to and freezes. This is due to the directives being loaded.
As the directive will not change once its been made, I was wondering whether there was a way of caching the compiled output such that directive acts almost like a static control?
I am attempting to create a demo of this here: http://plnkr.co/edit/1ivHtxQ0bGnnvqy4usrj
var app = angular.module('plunker', [])
.controller('MainCtrl', function($scope) {
$scope.rows = _.range(50);
$scope.columns = _.range(8)
})
.directive('myCellDirective', function($compile){
var compiled = $compile('<span>{{row}}*{{column}}={{row*column}}</span>');
return {
link:function(scope,element,attrs){
compiled(scope,function(clonedElement){
element.append(clonedElement)
});
}
}
})
.directive('listCountry', function() {
var countries = [240];
for (i=0; i<240; i++) {
countries[i] = i;
}
return {
template: `template starts here
<br /><md-select ng-model="countryToSelect">
<md-option ng-repeat="item in countries"
value="{{item}}">{{item}}</md-option>
</md-select>
<br />template ends here`
};
});
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<!DOCTYPE html>
<html ng-app="plunker">
<head>
<meta charset="utf-8" />
<title>AngularJS Plunker</title>
<script>document.write('<base href="' + document.location + '" />');</script>
<link rel="stylesheet" href="style.css" />
<link href="https://ajax.googleapis.com/ajax/libs/angular_material/1.0.4/angular-material.min.css"></style>
<script data-require="angular.js#1.2.x" src="http://code.angularjs.org/1.2.15/angular.js" data-semver="1.2.15"></script>
<script data-require="lodash.js#2.4.1" data-semver="2.4.1" src="http://cdnjs.cloudflare.com/ajax/libs/lodash.js/2.4.1/lodash.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/angular_material/1.0.4/angular-material.min.js"></script>
<script src="app.js"></script>
</head>
<body ng-controller="MainCtrl">
<div list-country></div>
<div list-country></div>
<div list-country></div>
<div list-country></div>
<div list-country></div>
<div list-country></div>
<div list-country></div>
<div list-country></div>
<div list-country></div>
<div list-country></div>
<table>
<tr ng-repeat="row in rows">
<td ng-repeat="column in columns">
<div my-cell-directive></div>
</td>
</tr>
</table>
</body>
</html>
Related
i have this peace of code in angularjs:
<div ng-repeat="item in benchmarGeographyObj">
<div style="padding-right: 60px;float:left;">
<input readonly style="width: 100%;" type="text" id="unik" ng-value="item.BEN_BENCHMARK_GEOGRAPHY" />
</div>
</div>
The Problem when i try to add ng-model in the input text, the value of ng-value disappeared, how i can fix this proble please ?
From the ngValue reference:
It can also be used to achieve one-way binding of a given expression
to an input element such as an input[text] or a textarea, when that
element does not use ngModel.
https://docs.angularjs.org/api/ng/directive/ngValue
This means you have to use either ngModel or ngValue, but not both. They conflict.
var app = angular.module('plunker', []);
app.controller('MainCtrl', function($scope) {
$scope.benchmarGeographyObj = [{'BEN_BENCHMARK_GEOGRAPHY': 1},{'BEN_BENCHMARK_GEOGRAPHY': 2}];
});
<!DOCTYPE html>
<html ng-app="plunker">
<head>
<meta charset="utf-8" />
<title>AngularJS Plunker</title>
<script>
document.write('<base href="' + document.location + '" />');
</script>
<link rel="stylesheet" href="style.css" />
<script data-require="angular.js#1.3.x" src="//code.angularjs.org/1.3.1/angular.js" data-semver="1.3.1"></script>
<script src="app.js"></script>
</head>
<body ng-controller="MainCtrl">
<div ng-repeat="item in benchmarGeographyObj">
<div style="padding-right: 60px;float:left;">
<input readonly style="width: 100%;" type="text" id="unik" ng-model="item.BEN_BENCHMARK_GEOGRAPHY" />
</div>
</div>
</body>
</html>
I am trying to populate input by typing the number in input[number].
Why this doesn't work
// Code goes here
var app = angular.module('app', []);
app.controller('MainCtrl', function($scope) {
$scope.lengInput = {
count: 0,
values: [],
fill: function(limit) {
var sequence = [];
for (var i = 0; i < limit; i++) {
sequence.push(i);
}
return sequence;
}
};
});
<!DOCTYPE html>
<html ng-app="app">
<head>
<meta charset="utf-8" />
<title>AngularJS Plunker</title>
<link rel="stylesheet" href="style.css" />
<script data-require="angular.js#1.5.x" src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.5.11/angular.js" data-semver="1.5.11"></script>
<script src="script.js"></script>
</head>
<body ng-controller="MainCtrl">
<p>Hello {{name}}!</p>
<input ng-model="lengInput.count" type="number" min="1" max="20">
<ul>
<li ng-repeat="i in lengInput.fillSequence(lengInput.count)">
<input ng-model="lengInput.values[i]" />
</li>
</ul>
</body>
</html>
since this is working
JSFiddle Demo
Please find my mistake.
Instead of attaching the function directly to the ng-repeat, you can use ng-init to intialize the $scope.lengInput.values and add an ng-change to the input field where $scope.lengInput.count is getting set, so that the function does not get run every time, instead it runs only when the value in the input box has changed!
// Code goes here
var app = angular.module('app', []);
app.controller('MainCtrl', function($scope) {
$scope.lengInput = {
count: 0,
values: [],
fill: function(limit) {
var sequence = [];
for (var i = 0; i < limit; i++) {
sequence.push(i);
}
$scope.lengInput.values = sequence;
}
};
});
<!DOCTYPE html>
<html ng-app="app">
<head>
<meta charset="utf-8" />
<title>AngularJS Plunker</title>
<link rel="stylesheet" href="style.css" />
<script data-require="angular.js#1.5.x" src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.5.11/angular.js" data-semver="1.5.11"></script>
<script src="script.js"></script>
</head>
<body ng-controller="MainCtrl" ng-init="lengInput.fill(lengInput.count)">
<p>Hello {{name}}!</p>
<input ng-model="lengInput.count" type="number" min="1" max="20" ng-change=" lengInput.fill(lengInput.count)">
<ul>
<li ng-repeat="i in lengInput.values">
<input ng-model="lengInput.values[i]" />
</li>
</ul>
</body>
</html>
My browser only renders : "{{ cust.name + ',' + cust.city }}"
index.html
<!DOCTYPE html>
<html data-ng-app="demoApp">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=Edge">
<title></title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
<style>
html, body, input, select, textarea
{
font-size: 1em;
}
</style>
</head>
<body>
<div data-ng-controller="SimpleController">
Name :
<br>
<input type="text" data-ng-model="name">
<br>
<ul>
<li data-ng-repeat="cust in customers">{{ cust.name + ',' + cust.city }}</li>
</ul>
</div>
<script>
var demoApp = angular.module('demoApp', []);
var controllers = {};
controllers.SimpleController = function ($scope) {
$scope.customers = [
{name:'John', city:'Paris'},
{name:'Andy La', city:'Londra'},
{name:'George', city:'Berlin'}
];
});
demoApp.controller(controllers);
</script>
</body>
<script src="Scripts/angular.min.js"></script>
</html>
Its something wrong with my code??? Any ideea what can i do?
I have tryed some other ideeas from other sites and other people but it doesn't work. I dont know what do do anymore.
I am quite new with angularJS!
Thanks!
You need to refer the angular.js script inside the body tag
Also you have extra paranthesis at the end, remove it.
DEMO
var demoApp = angular.module('demoApp', []);
var controllers = {};
controllers.SimpleController = function ($scope) {
$scope.customers = [
{name:'John', city:'Paris'},
{name:'Andy La', city:'Londra'},
{name:'George', city:'Berlin'}
];
};
demoApp.controller(controllers);
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.5/angular.min.js"></script>
<div ng-app="demoApp" ng-controller="SimpleController">
Name :
<br>
<input type="text" data-ng-model="name">
<br>
<ul>
<li data-ng-repeat="cust in customers">{{ cust.name + ',' + cust.city }}</li>
</ul>
</div>
I have a template in which I have rows, and there are two elements in each row and each element has different classes so I have my Html structure like so (simplified)
<div ng-repeat "row in deals">
<div class="deal-title-left">{{row[0].title}}</div>
<div class="deal-title-right">{{row[1].title}}</div>
</div>
I would like to add a search box feature that will use live search to go through the deal titles. I have tried using the ng-model="search" and adding a search filter into the row div, but how do I apply the model to each individual deal instead of the entire row?
Demo :http://plnkr.co/edit/zGYLPcPHTr1TOSZTIBI2?p=preview
<!DOCTYPE html>
<html ng-app="app">
<head>
<meta charset="utf-8" />
<title>AngularJS Plunker</title>
<script>document.write('<base href="' + document.location + '" />');</script>
<link href="style.css" rel="stylesheet" />
<script data-semver="1.2.21" src="https://code.angularjs.org/1.2.21/angular.js" data-require="angular.js#1.2.x"></script>
<script src="app.js"></script>
</head>
<body ng-controller="MainCtrl">
<input type="text" ng-model="search"/>
<div ng-repeat="row in deals | filter :{title:search}">
<div class="deal-title-left">{{row.title}}</div>
</div>
</body>
</html>
JS:
var app = angular.module('app', []);
app.controller('MainCtrl', function($scope) {
$scope.deals = [{
title: "Cola for free"
}, {
title: "Icecream for free"
}, {
title: "Tee for free"
},
]
});
I have a working table with a filter:
http://plnkr.co/edit/WnV7OUplcLHVOKbeTrSw?p=preview
After wrapping it in a tabset it stops working (the filter is still updated):
http://plnkr.co/edit/8uw2UhSC59txms5X563L?p=preview
But it worked with old versions before I updated:
http://plnkr.co/edit/eJvYtpc3efkydsQy8caL?p=preview
(angular 1.0.8 + bootstrap 2.0.3 + angular-ui-bootstrap-0.6.0)
Why did it stop working after the update?
http://plnkr.co/edit/70sLuA4gltgxhwTE0XT1
HTML (Just modified the filter usage)
<!doctype html>
<html ng-app="plunker">
<head>
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.2.8/angular.js"></script>
<script src="http://angular-ui.github.io/bootstrap/ui-bootstrap-tpls-0.10.0.js"></script>
<script src="example.js"></script>
<link href="//netdna.bootstrapcdn.com/bootstrap/3.0.3/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div ng-controller="TabsDemoCtrl">
<tabset>
<tab heading="broken filter">
<form class="form-inline" role="form">
<select id="okFilterbox" ng-model="okFilterBool">
<option>nothing</option>
<option>all</option>
</select>
</form>
<p>{{okFilterBool}}</p>
<div>
<table>
<tr ng-repeat="item in items | filterItem:okFilterBool">
<td>{{item.name}}</td>
</tr>
</table>
</div>
</tab>
<tab heading="tab2">
</tab>
</div>
</body>
</html>
JS (Changed the way the filter is defined to make a new 'Angular' filter)
angular.module('plunker', ['ui.bootstrap']);
var TabsDemoCtrl = function ($scope) {
$scope.okFilterBool = "all";
$scope.items = [
{ name: 'A'},
{ name: 'B'},
{ name: 'C'}
];
};
angular.module("plunker").filter("filterItem", function(){
return function(array, okFilterBool){
if(okFilterBool == "all"){ return array; }
return [];
}
})