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EmberJS 對(duì)象模型鏈接計(jì)算屬性
2018-01-03 17:15 更新
描述
鏈接計(jì)算屬性用于與單個(gè)屬性下的一個(gè)或多個(gè)預(yù)定義計(jì)算屬性進(jìn)行聚合。
語句
App.ClassName = Ember.Object.extend({
NameOfComputedProperty1: function() {
return VariableName;
}.property('VariableNames','...','VariableNamesn'),
NameOfComputedProperty2: function() {
return VariableName;
}.property('NameOfComputedProperty1', 'VariableNames','...','VariableNamesn')
});
例子
<!DOCTYPE html>
<html>
<head>
<title>Emberjs Chaining Computed Properties</title>
<!-- CDN's -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/handlebars.js/3.0.1/handlebars.min.js"></script>
<script src="https://code.jquery.com/jquery-2.1.3.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/ember.js/1.10.0/ember.min.js"></script>
<script src="https://builds.emberjs.com/tags/v1.10.0-beta.3/ember-template-compiler.js"></script>
<script src="https://builds.emberjs.com/release/ember.debug.js"></script>
<script src="https://builds.emberjs.com/beta/ember-data.js"></script>
</head>
<body>
<script type="text/javascript">
App = Ember.Application.create();
App.Person = Ember.Object.extend({
firstName: null,
lastName: null,
age: null,
mobno: null,
//Defining the Person and Details computed property function
Person: function() {
return this.get('firstName') + ' ' + this.get('lastName');
}.property('firstName', 'lastName'),
Details: function() {
return 'Name: '+this.get('Person') + ' Age: ' + this.get('age') + ' Mob No: ' + this.get('mobno');
}.property('Person', 'age', 'mbno')
});
var emp = App.Person.create({
//initializing the values for variable
firstName: 'Jhon',
lastName: 'K',
age: 24,
mobno:'8792227920'
});
document.write("Details of employee: <br>");
document.write(emp.get('Details'));//displaying the values by get() method
</script>
</body>
</html>
輸出
讓我們執(zhí)行以下步驟，看看上面的代碼如何工作：
將上面的代碼保存在obj_mod_chainin_cmp.html文件中
在瀏覽器中打開此HTML文件。
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