标签：closed show function 文本 pre 字符串 区域 ret tar
<!DOCTYPE html> <html lang="zh_CN"> <head> <title>字数小例子</title> </head> <body ng-app="noCntAPP"> <div ng-controller="noCntCtrl"> <h2>我的笔记</h2> <textarea cols="30" rows="10" ng-model="txtArea"></textarea> <p><button>读取</button> <button>提交</button> <button>撤销</button> <p>剩余字数: {{getCount()}}</p> </p> <div> <script type="text/javascript" src="./angular.js"></script> <script type="text/javascript"> angular.module(‘noCntAPP‘,[]) .controller(‘noCntCtrl‘,[‘$scope‘,function($scope){ $scope.txtArea=‘‘; // 初始化文本区域值为空串 $scope.getCount=function(){ return 100 - $scope.txtArea.length; } }]); </script> </body> </html>
<!DOCTYPE html> <html lang="zh_CN"> <head> <title>字数小例子</title> </head> <body ng-app="noCntAPP"> <div ng-controller="noCntCtrl"> <h2>我的笔记</h2> <textarea cols="30" rows="10" ng-model="txtArea"></textarea> <p><button>读取</button> <button>提交</button> <button>撤销</button> <p>剩余字数: {{getCount()}}</p> </p> <div> <script type="text/javascript" src="./angular.js"></script> <script type="text/javascript"> angular.module(‘noCntAPP‘,[]) .controller(‘noCntCtrl‘,[‘$scope‘,function($scope){ $scope.txtArea=‘‘; // 初始化文本区域值为空串 $scope.getCount=function(){ if($scope.txtArea.length>100){ $scope.txtArea = $scope.txtArea.slice(0,100); // 超过 100 截取前 0-99 个字符 } return 100 - $scope.txtArea.length; } }]); </script> </body> </html>
标签：closed show function 文本 pre 字符串 区域 ret tar
原文地址：https://www.cnblogs.com/Frank99/p/9067956.html
