angular.isDefined()

发布时间：2020-12-17 07:05:04 所属栏目：安全来源：网络整理

导读：!DOCTYPE htmlhtml head meta charset="UTF-8" titleangular.isDefined/title /head body ng-app="isDefinedExample" h1angular.isDefined/h1 p span描述：/spanbr / span判断参数是否是定义引用/span /p p span使用方法：/spanbr / spanangular.isDefined(v

<!DOCTYPE html>
<html>

    <head>
        <meta charset="UTF-8">
        <title>angular.isDefined</title>
    </head>

    <body ng-app="isDefinedExample">
        <h1>angular.isDefined</h1>
        <p>
            <span>描述：</span><br />
            <span>判断参数是否是定义引用</span>
        </p>
        <p>
            <span>使用方法：</span><br />
            <span>angular.isDefined(value)</span>
        </p>
        <p>
            <span>参数：</span><br />
            <span>value：判断的值</span><br />
        </p>
        <p>
            <span>返回值：</span><br />
            <span>boolean</span>
        </p>
        <hr />
        <div ng-controller="isDefinedcon">
            <!--{{vals}}-->
        </div>
    </body>
    <script src="../../js/angular.1.3.0.js" type="text/javascript" charset="utf-8"></script>
    <script type="text/javascript">
        angular.module(‘isDefinedExample‘,[]).controller(‘isDefinedcon‘,function($scope) {
            var val = ‘‘;
　　　　　　  // var val;
            console.log(angular.isDefined(val))
            $scope.vals = angular.isDefined(val);
        })
    </script>

</html>

（编辑：李大同）

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