AngularJS實現的輸入框字數限制提醒功能示例

2019-11-19 15:04:30

字體：大中小

來源：轉載

供稿：網友

本文實例講述了AngularJS實現的輸入框字數限制提醒功能。分享給大家供大家參考，具體如下：

<!DOCTYPE html><html><head lang="en">  <meta charset="UTF-8">  <title>www.survivalescaperooms.com AngularJS字數提示</title></head><style>  *{    margin:0;    padding:0;  }  input,button,textarea,select{    outline:none;  }  textarea{    resize:none;  }  .content{    width:350px;    height:150px;    font-size:18px;    text-indent:40px;    overflow-y: hidden;    overflow-x: hidden;  }  .content:hover{    border:1px solid #00ffff;    cursor:pointer;  }  .top{    vertical-align:top;  }  .fontColor  {    color:#eee;  }  .tableT td{    margin-right:20px;  }</style><body ng-app="myApp" ng-controller="myControl"><table class="tableT">  <tr>    <td class="top">退貨說明 :</td>    <td><textarea id="sayId" class="content" ng-model="say" ng-keyup="changeText()"></textarea></td>  </tr>  <tr>    <td></td>    <td class="fontColor">你還可以輸入{{textLength}}字</td>  </tr></table></body><script type="text/javascript" src="../js/jquery-1.8.3.js"></script><script type="text/javascript" src="../js/angular.min.js"></script><script type="text/javascript">  var app = angular.module('myApp',[]);  app.controller('myControl',function($scope){    $scope.textLength = 10;    $scope.changeText = function(){      var length = $("#sayId").val().length;  //使用$scope.say.length的時候，輸入空格的時候沒有計算空格長度。      console.log(length);      $scope.textLength = 10 - length;      if($scope.textLength<=0){        $scope.textLength = 0;        $("#sayId").val($scope.say.slice(0,10));      }    }  });</script></html>

運行效果：