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AngularJs 在ng-repeat中动态使用ng-model进行双向数据绑定

AngularJs 在ng-repeat中动态使用ng-model进行双向数据绑定

首先说明一下功能需求:

当点击一次增加按钮的时候,下方就会多一行输入框;

当点击一次删除按钮的时候,所点击的删除按钮那行的输入框会消失;

当点击打印信息按钮的时候,把所有输入框中的数据读取出来,并打印到控制台上。

由此可看出,带有删除按钮的这部分DIV是动态的。

现在使用的是angularjs框架,那我们该如何去实现这样的功能呢?

angularjs有个很强大的功能,那就是双向数据绑定;

由此可以知道,我们就是要使用双向数据绑定的特性来实现它。

思路是这样的:

通过维护数组的方式来实现。

首先在angular控制器中创建一个数组,像这样:

$scope.showVBs = [];

当点击一次增加按钮的时候,就执行一次下方的方法:

$scope.BDetailsAdd = function(){
	$scope.showVBs.push({});
}
           

当点击一次删除按钮的时候,就执行一次下方的方法:

$scope.BDetailsAdd = function(Count){
	$scope.showVBs.splice(Count, 1);
}
           

当点击一次打印按钮的时候,就执行一次下方的方法:

通过遍历数组,取出里面的值

<p><span style="font-family: 'Anonymous Pro';"><span style="font-size:12px;">$scope.printInfo = function () {</span></span></p><pre name="code" class="html"><span style="font-size:12px;">        for (var i = 0; i < $scope.showVBs.length; i++) {
            console.log($scope.showVBs[i]);
        }
    };</span>
           

html的代码如下:

<div class="row  panel panel-default panel-body">
    <div class="col-md-offset-1 panel panel-default">
        <label>{{'Details'}}</label>
        <input type="button" class="btn btn-info" value="增加" ng-click="BDetailsAdd()">
        <input type="button" class="btn btn-danger" value="打印信息" ng-click="printInfo()">
    </div>
    <div class="vBaggages" ng-repeat="vba in showVBs">
        <div class="form-group col-md-2 col-md-offset-1">
            <input type="button" class="btn btn-info" value="删" ng-click="BDetailsDel($index)">
            <input type="text" class="form-control pull-right" ng-model="vba.Tag"
                   placeholder="Tag" style="width:70%">
        </div>
        <div class="form-group col-md-2 col-md-offset-1">
            <input type="text" class="form-control pull-right" ng-model="vba.NO"
                   placeholder="No.">
        </div>
        <div class="form-group col-md-5 col-md-offset-1">
            <input type="text" class="form-control pull-right" ng-model="vba.remarks"
                   placeholder="Remarks">
        </div>
    </div>
</div>
           

完整的源码:

<!docype html>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html ng-app="App">
<head>
    <title>index</title>
    <link rel="stylesheet" href="script/bootstrap/css/bootstrap.min.css" target="_blank" rel="external nofollow" >
    <script type="text/javascript" src="script/angular/angular.min.js"></script>
    <script type="text/javascript" src="script/app/appCtrl.js"></script>
</head>
<body ng-controller="EditCtrl">

<form role="form" name="editForm">
    <div class="row">
        <div class="col-md-12">
            <div class="row  panel panel-default panel-body">
                <div class="col-md-offset-1 panel panel-default">
                    <label>{{'Details'}}</label>
                    <input type="button" class="btn btn-info" value="增加" ng-click="BDetailsAdd()">
                    <input type="button" class="btn btn-danger" value="打印信息" ng-click="printInfo()">
                </div>
                <div class="vBaggages" ng-repeat="vba in showVBs">
                    <div class="form-group col-md-2 col-md-offset-1">
                        <input type="button" class="btn btn-info" value="删" ng-click="BDetailsDel($index)">
                        <input type="text" class="form-control pull-right" ng-model="vba.Tag"
                               placeholder="Tag" style="width:70%">
                    </div>
                    <div class="form-group col-md-2 col-md-offset-1">
                        <input type="text" class="form-control pull-right" ng-model="vba.NO"
                               placeholder="No.">
                    </div>
                    <div class="form-group col-md-5 col-md-offset-1">
                        <input type="text" class="form-control pull-right" ng-model="vba.remarks"
                               placeholder="Remarks">
                    </div>
                </div>
            </div>
        </div>
    </div>
</form>
</body>
           
</pre><pre name="code" class="html">/**
 * Created by wzs on 2015/9/6 0006.
 */
var App = angular.module('App', [])
App.controller('EditCtrl', ['$scope', function ($scope) {
    //================测试代码段================
    $scope.printInfo = function () {
        for (var i = 0; i < $scope.showVBs.length; i++) {
            console.log($scope.showVBs[i]);
        }
    };

    $scope.showVBs = [{
        "Tag": "Tag1",
        "NO": "No1",
        "remarks": "remarks1"
    }, {
        "Tag": "Tag2",
        "NO": "No2",
        "remarks": "remarks2"
    }];
    $scope.BDetailsAdd = function () {
        $scope.showVBs.push({});
    };
    $scope.BDetailsDel = function (Count) {
        $scope.showVBs.splice(Count, 1);
    };

           

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