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Angularjs First Knowledge

Source: Internet
Author: User
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Concept:

JavaScript-based ' client application framework ' enables us to develop Web applications more quickly and easily. Development for CRUD or spa single-page Web sites (frequent interaction of front-end data)

Scope:

$scope: Local

$rootScope: Global

bidirectional data binding: MVVM

$timeout usage similar to settimeout

But $timeout will change the value in the view

Ng-click similar to onclick

Ng-model

Listener: (Monitor data changes)

Three parameters:

objects to listen to

callback function----> has two parameters (new value, old value)

true: whether to listen in depth

Instance:

<!doctype html>

<meta charset= "UTF-8" >

<title>angularjs First Knowledge </title>

<!--introduce angularjs files--

<script type= "Text/javascript" src= "Angular.min.js" ></script>

<script type= "Text/javascript" >

var Phonecatapp =angular.module (' Phonecatapp ', []);

Phonecatapp.controller (' Phonelistctrl ', function ($scope) {

$scope. huawei={

' price ': 1499,

' num ': 1,

' fre ': 20

};

$scope. max = function () {

return $scope. huawei.price* $scope. Huawei.num;

}

$scope. $watch ($scope. Max,function (newval,oldval) {

newval>=100? $scope. huawei.fre=0: $scope. huawei.fre=20;

},true);

})

</script>

<body>

<div ng-controller= ' Phonelistctrl ' >

<p> Price: <input type= "text" ng-model= ' Huawei.price '/></p>

<p> Number: <input type= "text" ng-model= ' Huawei.num '/></p>

<p> Fee: <span></span>{{max () | Currency: ' ￥ '}}</p>

<p> Freight: <span></span>{{huawei.fre | Currency: ' ￥ '}}</p>

<p> total: <span></span>{{max () +huawei.fre| currency: ' ￥ '}}</p>

</div>

</body>



This article is from the "12897581" blog, please be sure to keep this source http://12907581.blog.51cto.com/12897581/1928368

Angularjs First Knowledge

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