2014-04-15 45 views
28

我是AngularJS的初學者。我正嘗試在「ng-show」的幫助下在過濾過程中顯示「No Tag Found」。ng-show當數組長度爲零時

JS:

function simpleController($scope) 
{ 
$scope.tags = ['HTML','CSS','Jquery','Bootstrap','AngularJS']; 
} 

HTML:

<div ng-controller="simpleController"> 
<input class="txt" type="text" ng-model="nameText" /> 
<div> 
<ul> 
    <li ng-repeat="myKeys in tags| filter:nameText">{{myKeys}}</li> 
</ul> 
<div ng-show="!tags.length">No Tag Found</div> 
</div> 
</div> 

當我鍵入比陣列以外的任何值VALES,我沒能獲得 「否標籤找到」 使用上述碼。請幫忙。謝謝。

回答

41

如果您要過濾ng-repeat,則必須爲您應用相同的過濾器ng-show。如果你不這樣做,ng-show總是指全陣列:

<div ng-show="!(tags| filter:nameText).length">No Tag Found</div> 

工作小提琴:http://jsfiddle.net/HB7LU/3149/

+1

謝謝你的小提琴。這就是我正在尋找的:)乾杯 – user2218497

+1

你也可以使用'!count(tags)'[點擊這裏查看Cetia小提琴的修改版](http://jsfiddle.net/HB7LU/26922/) –

17

就更好地利用NG隱藏:

<div ng-hide="tags.length">No Tag Found</div> 
11
<div class="box" ng-show="team_stores.length > 0" > 

工作對我來說

2

輕鬆地創建過濾器...演示是如下

var app = angular.module('myApp', []); 
 
app.controller('myctrl', function ($scope) { 
 

 
    $scope.friends = [ 
 
     { name: "Peter", age: 20 }, 
 
     { name: "Pablo", age: 55 }, 
 
     { name: "Linda", age: 20 }, 
 
     { name: "Marta", age: 37 }, 
 
     { name: "Othello", age: 20 }, 
 
     { name: "Markus", age: 32 } 
 
    ]; 
 

 
});
<!DOCTYPE html> 
 
<html> 
 
<head> 
 
<title>welcome</title> 
 
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script> 
 
</head> 
 
<body ng-app="myApp" ng-controller="myctrl"> 
 
    Name: <input ng-model="filter" type="text" /> 
 
    <ul> 
 
     <li ng-repeat="friend in friends |filter:filter">{{friend.name}}</li> 
 

 
     <li ng-show="!(friends| filter:filter).length">data not found</li> 
 
     <!--<link ng-repeat="friend in friends|filter:isActive ">--> 
 
    </ul> 
 

 

 
</body> 
 
</html>