Dynamic addition of div using ng-repeat in angularjs

问题

I am a beginner in angularjs. I want to dynamically add a div while clicking on add icon.I have done some script on this .

HTML part:

<div ng-show="child" class="childDiv" data-ng-repeat="choice in choices track by $index">
    <label for="childname" class="childname"  >ServerName </label>
    <input  ng-model="serverinfo.childname" type="text" required="required"  placeholder="name"/>
    <label for="childname" class="childname"  >Fullname</label>
    <input  ng-model="serverinfo.childfullname" type="text" required="required"  placeholder="fullname"/>
    <label for="childname" class="childname"  >Mandatory Field</label>
    <input  ng-model="serverinfo.field" type="text" required="required"  placeholder="city/county.."/>
    <label for="childname" class="childname"  >Field values</label>
    <input  ng-model="serverinfo.value" type="text" required="required"  placeholder=""/>
    <i ng-click="removechild()" ng-show="$last" style="padding-left:16em;" class="material-icons">remove</i>                                    
</div>
<i ng-click="addchild()" style="padding-left:16em;" class="material-icons">add</i>

JS part:

$scope.addchild  = function() {
    //  $scope.child = true;
    var newItemNo = $scope.choices.length+1;
    $scope.choices.push({'id':'choice'+newItemNo});
};

$scope.removechild  = function() {
    var lastItem = $scope.choices.length-1;
    $scope.choices.splice(lastItem);
};

My output is like this,

My issue is like whatever I input in the textbox, it will automatically copy to the next set. Can anyone figure out the issue.

回答1:

You're currently binding all the values to the same object serverinfo, and because you're inside a loop (ng-repeat) then each field in the loop is bound to the same object in the controller.

You have two options:

Bind the fields to the choice element:

<div ng-show="child" class="childDiv" data-ng-repeat="choice in choices track by $index">
    <input  ng-model="choice.childname" type="text" required="required"  placeholder="name"/>
</div>

The above will bind the properties to each choice directly, and will be available in the controller via console.log( $scope.choices[0].childname );

Use the $index indicator to create an array of matched choices:

This is a good solution for cases when you don't want to overwrite/change the values of the original array.

<div ng-show="child" class="childDiv" data-ng-repeat="choice in choices track by $index" ng-init="serverinfo[ $index ].id = choice.id">
    <input  ng-model="serverinfo[ $index ].childname" type="text" required="required"  placeholder="name"/>
</div>

The above will bind the properties to a new array object name serverinfo, where each element is relative to a choice in $scope.choices, it will be available in the controller via console.log( $scope.serverinfo[0].childname );

Note that I also added ng-init="serverinfo[ $index ].id = choice.id" to copy the id property of each choice to the new array elements that are dynamically created by the ngRepeat directive loop.

回答2:

using your repeated item name "choice" instead of serverInfo should solve the issue

                       <div ng-show="child" class="childDiv" data-ng-repeat="choice in choices track by $index">
                                        <label for="childname" class="childname"  >ServerName </label>
                                        <input  ng-model="choice.childname" type="text" required="required"  placeholder="name"/>
                                        <label for="childname" class="childname"  >Fullname</label>
                                        <input  ng-model="choice.childfullname" type="text" required="required"  placeholder="fullname"/>
                                        <label for="childname" class="childname"  >Mandatory Field</label>
                                        <input  ng-model="choice.field" type="text" required="required"  placeholder="city/county.."/>
                                        <label for="childname" class="childname"  >Field values</label>
                                        <input  ng-model="choice.value" type="text" required="required"  placeholder=""/>
                                        <i ng-click="removechild()" ng-show="$last" style="padding-left:16em;" class="material-icons">remove</i>

                                </div>
                                <i ng-click="addchild()" style="padding-left:16em;" class="material-icons">add</i>

回答3:

That is because you are binding same ng model to each repeating object. put

 ng-model="choice.childname"

Do same for other inputs. And if you want serverinfo to contain all this values than copy it.

来源：https://stackoverflow.com/questions/43609770/dynamic-addition-of-div-using-ng-repeat-in-angularjs