<!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>
