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AngularJS：实现动态添加输入控件功能（转）

2015-06-12 14:08 483 查看

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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<script src="http://code.jquery.com/jquery.js"></script>
<script src="js/angular/angular.min.js"></script>
<script src="SendSafeMessageController.js"></script>
</head>
<body ng-app="ftitApp">
<div class="form-group" ng-controller="SendSafeMessageController">
<label class="col-md-2 control-label">答复内容:</label>
<div class="col-md-10">
<div ng-repeat="reply in fchat.replies">
<div class="form-group">
<div class="col-md-12">
<div class="col-md-1">
<label for="reply{{$index + 1}}">回答{{$index + 1}}</label>
</div>
<div class="col-md-9">
<input type="text" class="form-control" ng-model="reply.value"
id="reply{{$index + 1}}" name="reply{{$index + 1}}" />
</div>
<div class="col-md-2 img-link">
<a href="" ng-click="fchat.incrReply($index)">
<img src="img/plus.png" alt="plus" width="30px" height="30px" />
</a>
<a href="" ng-click="fchat.decrReply($index)" ng-show="fchat.canDescReply">
<img src="img/minus.png" alt="minus" width="30px" height="30px"/>
</a>

</div>
</div>
</div>
</div>
<input type="hidden" id="replies" name="replies" value="{{fchat.combineReplies()}}" />
</div>
</div>
</body>
</html>

SendSafeMessageController.js代码如下：

var ftitAppModule = angular.module('ftitApp', []);

ftitAppModule.controller('SendSafeMessageController',function($scope,$log){

$scope.fchat = new Object();
$scope.fchat.replies = [{key: 0, value: ""}];
// 初始化时由于只有1条回复，所以不允许删除
$scope.fchat.canDescReply = false;

// 增加回复数
$scope.fchat.incrReply = function($index) {
$scope.fchat.replies.splice($index + 1, 0,
{key: new Date().getTime(), value: ""});   // 用时间戳作为每个item的key
// 增加新的回复后允许删除
$scope.fchat.canDescReply = true;
}

// 减少回复数
$scope.fchat.decrReply = function($index) {
// 如果回复数大于1，删除被点击回复
if ($scope.fchat.replies.length > 1) {
$scope.fchat.replies.splice($index, 1);
}
// 如果回复数为1，不允许删除
if ($scope.fchat.replies.length == 1) {
$scope.fchat.canDescReply = false;
}
}

$scope.fchat.combineReplies = function() {
var cr = "";
for (var i = 0; i < $scope.fchat.replies.length; i++) {
cr += "#" + $scope.fchat.replies[i].value;
}
cr = cr.substring(1);
// $log.debug("Combined replies: " + cr);

return cr;
}

});

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