AngularJS ng-mousemove用法及代码示例

AngularJS中的ng-mousemove指令用于在特定HTML元素上发生mousemove事件时应用自定义行为。当鼠标移到特定的HTML元素上时，它可用于显示弹出警报。所有HTML元素都支持它。

用法:

<element ng-mousemove="expression"> Contents... </element>

范例1：本示例使用ng-mousemove指令更改CSS样式。

<!DOCTYPE html> 
<html> 
      
<head> 
    <title>ng-mousemove Directive</title> 
      
    <script src= 
"https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js"> 
    </script> 
</head> 
  
<body ng-app="app" style="padding-left:30px;"> 
      
    <h1 style="color:green">GeeksforGeeks</h1> 
      
    <h2>ng-mousemove Directive</h2> 
      
    <div ng-controller="geek"> 
        <div style="height:20px;width:20px; " ng-style= 
                "{'backgroundColor':'lightgreen', width:X+'px', 
                height:Y+'px' }" ng-mousemove="down($event)"></div> 
          
        <pre ng-show="X">Current position:{{X}}, {{Y}}</pre> 
    </div> 
      
    <script> 
        var app = angular.module("app", []); 
        app.controller('geek', ['$scope', function ($scope) { 
            $scope.down = function (event) { 
                $scope.X = event.clientX; 
                $scope.Y = event.clientY; 
            }; 
        }]); 
    </script> 
</body> 
  
</html>

输出：
在鼠标移动元素之前：
ngmousemove
鼠标移动元素后：

范例2：本示例使用ng-mousemove指令显示警报消息。

<!DOCTYPE html> 
<html> 
      
<head> 
    <title>ng-mousemove Directive</title> 
      
    <script src= 
"https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js"> 
    </script> 
</head> 
  
<body  ng-app="app" style="text-align:center"> 
      
    <h1 style="color:green">GeeksforGeeks</h1> 
    <h2>ng-mousemove Directive</h2> 
   
    <div ng-controller="app"> 
        Input:<input type="text" ng-mouseleave="alert()"
                ng-model="click" /> 
    </div> 
      
    <script> 
        var app = angular.module("app", []); 
        app.controller('app', ['$scope', function ($scope) { 
            $scope.click = 'geeksforgeeks'; 
            $scope.alert = function () { 
                alert($scope.click); 
            } 
        }]); 
    </script> 
</body> 
  
</html>

输出：
在鼠标移动输入元素之前：
ngmousemove
鼠标移动输入元素后：

相关用法

注：本文由纯净天空筛选整理自Vishal Chaudhary 2大神的英文原创作品 AngularJS | ng-mousemove Directive。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。