整理书籍内容（QQ:283125476 发布者：M 【重在分享，有建议请联系-》QQ号】）
ng-change 当文本输入字段中内容发生了变化，就会改变equation.x的值：
<body ng-app="myApp">
<div ng-controller="TestController">
<input type="text"
ng-model="equation.x"
ng-change="change()" />
<code>{{ equation.output }}</code>
</div>
<script>
var app = angular.module("myApp", []);
app.controller("TestController", function($scope) {
$scope.equation = {};
$scope.change = function() {
$scope.equation.output = parseInt($scope.equation.x) + 2;
};
});
</script>
</body>
- 表单合法时设置 ng-valid;
- 表单不合法时设置 ng-invlid;
- 表单未进行修改时设置 ng-pristion;
- 表单进行过修改时设置 ng-dirty;
ng-cloak效果跟ng-bind差不多，就是为了防止闪烁
<body ng-app="myApp">
<div ng-controller="TestController">
<p ng-cloak>sss{{ aaa }}</p>
</div>
<script>
var app = angular.module("myApp", []);
app.controller("TestController", function($scope, $timeout) {
//dosomething;
$timeout(function() {
$scope.aaa = "lll";
}, 1000);
});
</script>
</body>
ng-click
<body ng-app="myApp">
<div ng-controller="TestController">
<button ng-click="count = count +1"
ng-init="count = 9">increment</button>
count: {{ count }};
<button ng-click="decrement()">decrement</button>
</div>
<script>
var app = angular.module("myApp", []);
app.controller("TestController", function($scope) {
//dosomething;
$scope.decrement = function() {
$scope.count = $scope.count - 1;
};
});
</script>
</body>
ng-select
<body ng-app="myApp">
<div ng-controller="TestController">
<ul>
<li ng-repeat="color in colors">
Name: <input ng-model="color.name">
[<a href ng-click="colors.splice($index, 1)">X</a>]
</li>
<li>
[<a href ng-click="colors.push({})">add</a>]
</li>
</ul>
<hr/>
Color (null not allowed):
<select ng-model="myColor" ng-options="color.name for color in colors"></select><br>
Color (null allowed):
<span class="nullable">
<select ng-model="myColor" ng-options="color.name for color in colors">
<option value="">-- choose color --</option>
</select>
</span><br/>
Color grouped by shade:
<select ng-model="myColor" ng-options="color.name group by color.shade for color in colors">
</select><br/>
Select <a href ng-click="myColor = { name:'not in list', shade: 'other' }">bogus</a>.<br>
<hr/>
Currently selected: {{ {selected_color:myColor} }}
<div style="border:solid 1px black; height:20px"
ng-style="{'background-color':myColor.name}">
</div>
</div>
<script>
var app = angular.module("myApp", []);
app.controller("TestController", function($scope) {
$scope.colors = [
{name:'black', shade:'dark'},
{name:'white', shade:'light'},
{name:'red', shade:'dark'},
{name:'blue', shade:'dark'},
{name:'yellow', shade:'light'}
];
$scope.myColor = $scope.colors[2];
});
</script>
</body>
ng-attr-(suffix)
当AngularJS编译DOM时会查找花括号{{ some expression }}内的表达式。这些表达式会被自动注册到$watch服务中
并更新到$disgest循环中，成为它的一部分：
有时候浏览器会对属性进行很苛刻的限制。SVG就是一个例子：
<svg>
<circle cx="{{ cs }}"></sircle>
</svg>
运行上面的代码会抛出一个错误，指出我们有一个非法属性，可以用ng-attr-cs来解决这个问题，
注意，cx位于这个名称的尾部，在这个属性中，通过用来{{ }}写表达式，达到前面提到的目的：
<svg>
<circle ng-attr-cx="{{ cx }}"></circle>
</svg>