AngularJs 的 ng-repeat 讓我們非常方便的遍曆數組產生 Dom 元素，但是使用不當也會有效能問題。下面給大家分享在項目中使用ng-repeat指令實現下拉框。
1、問題背景
select下拉框裡option組裝成下拉框，這裡利用ng-repeat指令來建立
2、實現源碼
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>AngularJS之下拉框（方式二）</title> <script type="text/javascript" src="../js/angular.min.js" ></script> <script> var app = angular.module("secondApp",[]); app.controller("secondCon",function($scope){ $scope.trees = ["松樹","樟樹","楓樹","棗樹","桃樹"]; }); </script> </head> <body> <div ng-app="secondApp" ng-controller="secondCon"> <select style="width: 200px;"> <option ng-repeat="tree in trees">{{tree}}</option> </select> </div> </body> </html>
3、問題說明
ng-repeat指令可以重複資料
以上所述是小編給大家介紹的AngularJS使用ng-repeat指令實現下拉框，希望對大家有所協助，如果大家有任何疑問請給我留言，小編會及時回複大家的。在此也非常感謝大家對雲棲社區網站的支援！
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