I am learning lwc and I came across this problem. I have the following code.
html:
<template if:true={showLayout}>
<template if:true={showAllTabs}>
<div class="tab-container">
<div class="left-arrow">
'Left icon code'
</div>
<ul class="slds-tabs_default_nav tab-list">
'li elements to disply the tabs'
</ul>
<div class="right-arrow">
'Left icon code'
</div>
</div>
</template>
</template>
I am trying to get the reference of the ul element and right-arrow div in javascript to decide whether right navigation arrow should be shown or not based on scroll available on ul element. But, I am unable to get the reference of these 2 elements. I know that they are hidden thats why I am not able to find the reference. But, how to overcome this issue.
I tried to get the reference in renderedCallback() and in the function where showAlltabs becomes true, nothing worked.
JS:
renderedCallback(){
let tabList = this.template.querySelector('.tab-list');
let rightArrow = this.template.querySelector('.right-arrow');
}
handleLayoutOpen(){
this. showAllTabs = true;
let tabList = this.template.querySelector('.tab-list');
let rightArrow = this.template.querySelector('.right-arrow');
}
In both function I get undefined for both the elements.
Went through this developer guide https://lwc.dev/guide/html_templates#render-html-conditionally , nothing is mentioned about template reference here.
PS: I am very new to LWC, please be kind in your answer.
I was able to find a alternate solution to this problem. I used slds-hideand slds-show classes, instead of if:true.
<div class='slds-hide'>
<div class='slds-hide'>
<div class="tab-container">
<div class="left-arrow">
'Left icon code'
</div>
<ul class="slds-tabs_default_nav tab-list">
'li elements to disply the tabs'
</ul>
<div class="right-arrow">
'Left icon code'
</div>
</div>
</div>
</div>
In JS I used Element.classList.add() and Element.classList.remove() methods to show and hide the divs whenever I need.
NOw I am able to get the reference of the hidden elements as they are not truly absent in the dom.
Related
I am making use of PrimeNG and Angular 8.
The code snippet is as follows -
<div class="p-col-12 p-md-6 p-col-nogutter drag-column">
<div *ngFor="let doc of availableDocs" class="ui-helper-clearfix">
<div class="ui-g-12 ui-md-4" pDraggable="docs" (onDragStart)="dragStart($event, doc)"
(onDragEnd)="dragEnd($event)">
<p-panel [header]="doc.title" [style]="{'text-align':'center'}">
<img src="assets/images/{{doc.extension}}.png">
</p-panel>
</div>
</div>
</div>
If in above code we remove the class ui-helper-clearfix, then the image cannot be dragged.
But in documentation no such requirement is mentioned. Can this be done without ui-helper-clearfix.
Or some other solution as it is not the layout i want.
I want to click on below link in a page with several other links like this one.
I have tried cy.get() with a number of alternative ways. I also tried cy.contains('Content 6') but received an error.
<div class="column">
<a href="/admin/contents/109">
<div class="ui segment">
<div class="ui center aligned header">
Content 6
<div class="sub header">Add description to content packages
</div>
</div>
</div>
</a>
</div>
This was my final solution:
cy.get('a[href*="admin/contents"]').contains('Content 6').click()
I found the solution on this page and with help from user called Udo: https://docs.cypress.io/faq/questions/using-cypress-faq.html#How-do-I-get-an-element’s-text-contents
The href code gives more example on how to handle this problem then other examples for same problem.
you have to "get" the correct element to click on. in your case it could be handled like this:
// find the link with href attribute containing "admin/contents" and click it
cy.get('a[href*="admin/contents"]').click()
I am studying AngularJS by looking at the website http://campus.codeschool.com/courses/shaping-up-with-angular-js/contents and downloaded the videos, then going through the examples on my computer.
Everything went well until the video codeschool_1329.mp4, otherwise called "Shaping_Up_With_Angular_JS_Level_2b". The example works correctly when the logic for selecting the panels is in the HTML code, but when the logic is moved to a controller, it no longer works correctly. Thus I have the relevant HTML code:
<section ng-controller="PanelController as panel">
<ul class="nav nav-pills">
<li ng-class="{active:panel.isSelected(1)}">
<a href ng-click="panel.selectTab(1)">Description</a>
</li>
<!-- Repeated for Specifications and Reviews -->
</ul>
</section>
<div class="panel" ng-show="panel.isSelected(1)">
<h4>Description</h4>
<p>{{product.description}}</p>
</div>
<!-- Repeated for Specifications and Reviews -->
and for the JavaScript code I have:
app.controller('PanelController', function(){
this.tab = 1;
this.selectTab = function(setTab){
this.tab = setTab;
};
this.isSelected = function(checkTab){
return this.tab === checkTab;
};
});
exactly as in the video. The latter is with the Angular module and another Angular controller for the store.
With both Google Chrome and Firefox, when I click on the each of the tabs "Description", "Specifications" and "Reviews", the selected tab is highlighted, as in the video, albeit blue rather than dark purple, but the text that is supposed to be displayed below the selected tab does not show up at all. It looks as if there is some type of a problem with the isSelected function in PanelController with ng-show="panel.isSelected(1)", etc. in the lower part of the HTML code, although it appears to work correctly with ng-class="{active:panel.isSelected(1)}" when the tab is highlighted.
This works correctly when the logic for this is in the HTML code, as I said above, but no matter what I can do, I am unable to get this to work correctly when the logic is in PanelController.
There must be something simple that I am missing, and would be grateful to get this sorted out - many thanks.
<section ng-controller="PanelController as panel">
...
</section>
<div class="panel" ng-show="panel.isSelected(1)">
Only the section element is controlled by the panel controller, but you're trying to use panel.isSelected(1) out of that section. So that can't work.
Put the div inside the section, or wrap everything with another div and move ng-controller="PanelController as panel"to that wrapping div.
I'm working on a project where the client has supplied a pile of html where I need to plugin the data from our database and have hit a problem that I'm finding difficult to solve....
So first problem is with routing
<div ng-repeat="class in vm.classes">
<div class="class-overview">
<a href="#">
<span class="class-title">{{class.description}}</span>
... more stuff here
</a>
</div>
<div class="class-information collapse">
<div class="full-width">
{{class.longDescription}}
</div>
</div>
</div>
he has supplied some javascript to handle the click on class-overview
$('.class-overview a').on('click',function(e) {
e.preventDefault();
});
$('.class-overview').on('click',function() {
$('.class-overview.active').removeClass('active').next('.class-information').collapse('hide');
$(this).addClass('active').next('.class-information').collapse('show');//.css('top',offset).collapse('show');
});
and i have a line like this in my state provider
// default route
$urlrouterProvider.otherwise("/")
So the problem is that the ui-router handles the click and sends me back to the home page.
The ideal solution is to leave as much of his markup intact, so can anyone tell me how I stop ui-router handling the click?
or failing that, how I might use ng-click and ng-show to get the same effect, i.e. hiding and showing the class-information div...
If I understand well your question, you want to display the .class-information div when you click on the .class-overview element.
That can be done by using a variable in a ng-show like this:
<div ng-repeat="class in vm.classes">
<div class="class-overview">
<a href="#" ng-click="display = !display">
<span class="class-title">{{class.description}}</span>
... more stuff here
</a>
</div>
<div class="class-information" ng-show="display">
<div class="full-width">
{{class.longDescription}}
</div>
</div>
</div>
The display variable will be falsy when you land on the page, therefore the ng-click will be executed, this variable will be set to true.
I see that you are using a collapse class to hide the content if it is collapsed. Then you could use angular ng-class to put the collapse class when the display variable is false. Your div.class-information would look like this:
<div class="class-information" ng-class="{collapse: !display}">
<div class="full-width">
{{class.longDescription}}
</div>
</div>
I've just started working on a project that requires me to learn AngularJS. What I'm trying to do is create two menus that slide into the screen, one from the left, one from the right. When they do this they push the content over.
Currently I can get one or the other to work, but not both. I realize this is because of the way that I'm defining the ng-class. I just can't quite conceptualize how to do it correctly.
<div ng-class="{true:'slide-left', false:''}[toggleSlide]" class="container">
<div class="content">
<button ng-click="toggleSlide = !toggleSlide" class="btn-left">From Left</button>
<button ng-click="toggleSlide = !toggleSlide" class="btn-right">From Right</button>
</div>
<div class="slide-from-left">
<p>Here is information that slides from off screen left.</p>
</div>
<div class="slide-from-right">
<p>Here is information that slides from off screen right.</p>
</div>
</div>
Set up the ng-class syntax like this for what you want:
<div ng-class="{'slide-left':toggleSlide, 'slide-right':!toggleSlide}" class="container">
Also, I'm guessing you were trying to adapt your code to something else you saw, so I'll offer something on that also. Here's an ng-class using ng-repeat's $index to dole out classes for even and odd:
ng-class="['even', 'odd'][$index % 2]"