AngularJS ng-mousemove用法及代碼示例

AngularJS中的ng-mousemove指令用於在特定HTML元素上發生mousemove事件時應用自定義行為。當鼠標移到特定的HTML元素上時，它可用於顯示彈出警報。所有HTML元素都支持它。

用法:

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

範例1：本示例使用ng-mousemove指令更改CSS樣式。

<!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>

輸出：
在鼠標移動元素之前：
ngmousemove
鼠標移動元素後：

範例2：本示例使用ng-mousemove指令顯示警報消息。

<!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>

輸出：
在鼠標移動輸入元素之前：
ngmousemove
鼠標移動輸入元素後：

相關用法

注：本文由純淨天空篩選整理自Vishal Chaudhary 2大神的英文原創作品 AngularJS | ng-mousemove Directive。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。