angularjs之表达式

简介

angularjs通过新的属性和表达式扩展了HTML。
angularjs可以构建一个单一页面应用程序。

angularjs数字

<div ng-app="" ng-init="quantity=1;cost=5">
 
<p>总价： {{ quantity * cost }}</p>
 
</div>

使用ng-init的相同实例:

<div ng-app="" ng-init="quantity=1;cost=5">
 
<p>总价： <span ng-bind="quantity * cost"></span></p>
 
</div>

angularjs字符串

<div ng-app="" ng-init="firstName='John';lastName='Doe'">
 
<p>姓名： {{ firstName + " " + lastName }}</p>
 
</div>

使用ng-init的相同实例:

<div ng-app="" ng-init="firstName='John';lastName='Doe'">
 
<p>姓名： <span ng-bind="firstName + ' ' + lastName"></span></p>
 
</div>

angularjs对象

<div ng-app="" ng-init="person={firstName:'John',lastName:'Doe'}">
 
<p>姓为 {{ person.lastName }}</p>
 
</div>

使用ng-bind的相同实例:

<div ng-app="" ng-init="person={firstName:'John',lastName:'Doe'}">
 
<p>姓为 <span ng-bind="person.lastName"></span></p>
 
</div>

angularjs数组

<div ng-app="" ng-init="points=[1,15,19,2,40]">
 
<p>第三个值为 {{ points[2] }}</p>
 
</div>

使用ng-bind的相同实例:

<div ng-app="" ng-init="points=[1,15,19,2,40]">
 
<p>第三个值为 <span ng-bind="points[2]"></span></p>
 
</div>