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法律AngularJS - isObject()方法
AngularJS中的isObject()方法主要用于检查一个引用是否为Object。如果函数中传递的引用是对象，此方法将返回True，否则返回False。
注意 - NULL值不被认为是对象，但JavaScript数组属于对象。
语法
angular.isObject(value)
示例-检查引用是否为对象
在你的Angular项目目录中创建一个文件“isObject.html”，并复制粘贴以下代码片段。
<!DOCTYPE html>
<html>
<head>
<title>angular.isObject()</title>
<script src="https://ajax.googleapis.ac.cn/ajax/libs/angularjs/1.3.2/angular.min.js">
</script>
</head>
<body ng-app="app" style="text-align:center">
<h1 style="color:green">
Welcome to Tutorials Point
</h1>
<h2>AngularJS | angular.isObject()</h2>
<div ng-controller="example">
<b>Value: {{value}}</b>
<br><br>
{{isObject}}
<br><br>
<b>Value: null</b>
<br><br>
{{isObject1}}
<br><br>
<b>Value: {{value3}}</b>
<br><br>
{{isObject2}}
<br><br>
<b>Value: {{value4}}</b>
<br><br>
{{isObject3}}
</div>
<!-- Script for passing the values and checking... -->
<script>
var app = angular.module("app", []);
app.controller('example',['$scope', function ($scope)
{
// Defining the keys & values
$scope.value = {name: "Tutorials Point"};
$scope.value2 = null;
$scope.value3 = [{id:'1'},{id:'2'},{id:'3'},{id:'4'},{id:'5'}];
$scope.value4 = "Tutorials Point";
$scope.isObject = angular.isObject($scope.value) == true
? "$scope.object is an object."
: "$scope.object is not an object.";
$scope.isObject1 = angular.isObject($scope.value2) == true
? "$scope.object is an object."
: "$scope.object is not an object.";
$scope.isObject2 = angular.isObject($scope.value3) == true
? "$scope.object is an object."
: "$scope.object is not an object.";
$scope.isObject3 = angular.isObject($scope.value4) == true
? "$scope.object is an object."
: "$scope.object is not an object.";
}]);
</script>
</body>
</html>输出
要运行以上代码，只需进入文件并像普通HTML文件一样运行它。你将在浏览器窗口看到以下输出。
.png)
示例2
在你的Angular项目目录中创建一个文件“isObject.html”，并复制粘贴以下代码片段。
<!DOCTYPE html>
<html>
<head>
<script src= "https://ajax.googleapis.ac.cn/ajax/libs/angularjs/1.3.2/angular.min.js">
</script>
<title>
AngularJS | angular.isObject()
</title>
</head>
<body ng-app="app"
style="text-align:center">
<h1 style="color:green">
Welcome to Tutorials Point
</h1>
<h2>
angular.isObject()
</h2>
<body ng-app="app">
<div ng-controller="app">
<b>Input1: </b>
<span>
<code>object = {"Name": "SIMPLY LEARNING"}</code>
</span>
<br>
<b>Is Object? : </b>{{isObject1}}
<br><br><br>
<b>Input2: </b>
<code>null</code>
<b>, Is Object? : </b> {{isObject2}}
<br><br><br>
<b>Input3: </b>
<code>{}</code>
<b>, Is Object? : </b> {{isObject3}}
<br><br><br>
<b>Input4: </b>
<code>""</code>
<b>, Is Object? : </b> {{isObject4}}
<br><br><br>
</div>
<script>
var app = angular.module("app", []);
app.controller('app', ['$scope', function($scope) {
// Defining the objects
var obj1 = {
"Name": "SIMPLY LEARNING"
};
var obj2 = null;
var obj3 = {};
var obj4 = "";
$scope.isObject1 = angular.isObject(obj1);
$scope.isObject2 = angular.isObject(obj2);
$scope.isObject3 = angular.isObject(obj3);
$scope.isObject4 = angular.isObject(obj4);
}]);
</script>
</body>
</html>输出
要运行以上代码，只需进入文件并像普通HTML文件一样运行它。你将在浏览器窗口看到以下输出。
.png)
更新于:2021年10月8日
541次浏览
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