angular-ng-if

Angularjs: how to close ng-if in comment block?

由 余生长醉 提交于 2019-12-10 01:10:32
问题 <div ng-if="true">visible</div> is pretty easy, but since ngIf can be used even in comments, what would be the closing </div> for comment block? Tried, w/o luck: <!-- ng-if: true --> .... <!-- ng-if --> Thanks. 回答1: ng-if is restricted to 'A' . so it can be used only as attribute, you can't use in comment Here's the angularjs code for ngIf var ngIfDirective = ['$animate', function($animate) { return { transclude: 'element', priority: 600, terminal: true, restrict: 'A', // --> This means

ngIf - else vs two ngIf conditions [closed]

由 旧巷老猫 提交于 2019-12-08 21:37:59
问题 Closed . This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed 2 years ago . Consider the following code sample: <div *ngIf="condition; else elseBlock"> <!-- markup here --> </div> <ng-template #elseBlock> <div> <!-- additional markup here --> </div> </ng-template> Another way I can achieve the same functionality is: <div *ngIf="condition"> <!--

why “<ng-container> not working in ”<tr>" tag

由 自闭症网瘾萝莉.ら 提交于 2019-12-08 00:15:05
问题 Code: <table> <tr> <ng-container ng-if="false"> // here ng-container not working <td> <ng-container ng-if="false">abc</ng-container>// here ng-container working fine </td> <td><ng-container ng-if="true">xyz</ng-container></td> </ng-container> </tr> </table> OutPut: xyz here expected output is no one cell was display but in between <tr> and <td> tags <ng-container ng-if="false"> are not working. If anyone idea about this problem please get solution. 回答1: I analysis this issue in deep and i

Show only open div with angular if

由 こ雲淡風輕ζ 提交于 2019-12-07 12:35:20
问题 I'm trying to acheive the same behavior as the spring code below: <c:forEach items="${data}" var="data" varStatus="contador"> <c:if test="${(contador.count-1)%3==0}"> <div class="conjunto-${conjunto} row"> <!-- Show opening div --> </c:if> <!-- Some HTML goes here --> <c:if test="${((contador.count-1)%3==2)}"> </div> </c:if> </c:forEach> Explaining: I want a new div from class row only after 3 other HTML elements have been added. I have tried this with ng-if , like this: <div ng-repeat="data

Update <select> tag inside ng-if in angularjs

由 强颜欢笑 提交于 2019-12-06 13:30:29
I would like to update the list of states on selection of country. I have researched a bit into this where it was recommended to use $parent as ng-if does not work on controller scope.But that too is not working for me. Can someone please help me understand how to get the values into state select control. Also I would also like to know what if there are multiple ng-if in my HTML. (again nested $parent.$parent.$parent... is not working) Plunker Link : Plunker Link "use strict"; var app = angular.module("app", []); function CountriesController($scope) { $scope.condition = true; $scope.countries

why “<ng-container> not working in ”<tr>\" tag

由 丶灬走出姿态 提交于 2019-12-06 10:45:32
Code: <table> <tr> <ng-container ng-if="false"> // here ng-container not working <td> <ng-container ng-if="false">abc</ng-container>// here ng-container working fine </td> <td><ng-container ng-if="true">xyz</ng-container></td> </ng-container> </tr> </table> OutPut: xyz here expected output is no one cell was display but in between <tr> and <td> tags <ng-container ng-if="false"> are not working. If anyone idea about this problem please get solution. I analysis this issue in deep and i faced some situation like <ng-container ng-if=""> or <ng-container ng-show=""> or <ng-container ng-hide="">

Angular ng-if vs ng-switch performance

由 不羁岁月 提交于 2019-12-06 06:31:44
问题 I was thinking which one is faster ng-if or ng-switch? Let's say we have a case: 10 different divs and only one is needed at a time. Is there any difference in speed if ng-switch is used instead of ng-if? If ng-if is used all the elements will be evaluated separately, but does ng-switch do the same? Using angular 1.x 回答1: ng-if is a ng-switch itself, the difference is only here that ng-if have only single expression. so if you have only one expression it's better to use ng-if , otherwise use

Content briefly rendering then disappearing using ng-if

由 有些话、适合烂在心里 提交于 2019-12-06 05:45:56
问题 I have some content on my page which is wrapped in an ng-if like below: <div ng-if="ShowMessgae" class="text-danger"> <p> <strong> Message displayed to User </strong> </p> </div> Then in my angular js controller I have the following: function MyController($scope, $q, notifyHelper) { openAjaxLoaderGif(); $scope.ShowMessgae = false; MyService.getVarsFromSession().then(function (result) { // some code removed for brevity if(some coditional) { $scope.ShowMessgae = true; } }, function (data,

Show only open div with angular if

由 淺唱寂寞╮ 提交于 2019-12-05 21:24:07
I'm trying to acheive the same behavior as the spring code below: <c:forEach items="${data}" var="data" varStatus="contador"> <c:if test="${(contador.count-1)%3==0}"> <div class="conjunto-${conjunto} row"> <!-- Show opening div --> </c:if> <!-- Some HTML goes here --> <c:if test="${((contador.count-1)%3==2)}"> </div> </c:if> </c:forEach> Explaining: I want a new div from class row only after 3 other HTML elements have been added. I have tried this with ng-if , like this: <div ng-repeat="data in DATA"> <div class="conjunto-{{$index/3}} row" ng-show="$index % 3 == 0" ng-include="'html.html'"> <

Best way to show error messages for angular reactive forms, one formcontrol multiple validation errors?

由 百般思念 提交于 2019-12-05 03:59:16
问题 I am showing reactive form error messages as per the suggested approach of angular angular form validation error example. html code of showing error on the page: <div [formGroup]="myForm"> <div> <input type="text" formControlName="firstName"/> <div *ngIf="myForm.controls.firstName.invalid" class="alert alert-danger"> <div *ngIf="myForm.controls.firstName.errors.required"> This Field is Required. </div> <div *ngIf="myForm.controls.firstName.errors.maxlength"> your can enter only 50 characters
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