I'm trying to get the height of a div in angularjs, but it only returns the initial value and never updates:
vm.summaryHeight = $(".history-log-container").height();
console.log(vm.summaryHeight);//returns 0 and then never logs again.
How can I get the height of this div as it updates?
I tried this:
link: function ($scope, element, attrs) {
//console.log(element.height());
$scope.$watch(function(){
return element.height();
}, function(oldVal, newVal){
//returns the initial values then nothing else
console.log(arguments);
})
}
As others have said, the value will be taken once unless you specify otherwise. Try something like;
$(document).resize(function(){
// Your code here
});
If your window size changing affects the height of the target element then whenever the document is resized the value will be retaken. This might also work if you were to target the element rather than the document;
$('.history-log-container').resize(function(){
// Your code here
});
But you'd have to check that out- I just usually have all my window responsive sizings within the one document resizing function.
Related
i want to do visual testing with cypress-image-diff. So far, so good. I can take and compare screenshots of the complete page, but never of the element itself, as they are in an iFrame. With help of cypress-iframe I can check e.g. name, stype etc of the element. But screenshots are always taken from another area. Pls help
verifyLogoShown() {
cy.log("Verify if diconium logo is visible");
cy.frameLoaded(this.IFRAME)
// after the frame has loaded, we can use "cy.iframe()"
// to retrieve it
cy.iframe().find(this.TEST_OBJECT).should('have.text', 'Styled Button - primary') // works. I can test all kinds of CSS or other values from the button TEST_OBJECT
cy.wait(1000);
cy.getIframeBody(this.IFRAME).find(this.TEST_OBJECT).should('have.text', "Styled Button - primary")
cy.getIframeBody(this.IFRAME).type("a")
cy.compareSnapshot('button (replaceable)');
//doesn't take screenshot of that part I expect (e.g. iFrame box or button itself, instead of the menu part on the left)
}
My commands.js
Cypress.Commands.add('getIframeDocument', (iFrameSelector) => {
return cy
.get(iFrameSelector)
.its('0.contentDocument');
})
Cypress.Commands.add('getIframeBodyOtherWay', (iFrameSelector) => {
return cy
.getIframeDocument(iFrameSelector).should('exist').its('body').should('not.be.undefined')
.then(cy.wrap);
})
Cypress.Commands.add("getIframeBody", (framename) => {
// get the iframe > document > body
// and retry until the body element is not empty
return cy
.get(framename)
.its('0.contentDocument.body').should('not.be.empty')
// wraps "body" DOM element to allow
// chaining more Cypress commands, like ".find(...)"
// https://on.cypress.io/wrap
.then(cy.wrap);
});
I am conceiving a horizontal bar containing items.
They must all be of same width, having the same spacing between them.
They can expand as much as they want vertically (
stackblitz here
Problem:
How to automatically set the width of the row elements? Here I simply put a value that looks good: width:200px.
I want them to have a width dependent on the number of element per row.
What I tried:
Using elementRef in Horizontile (component holding the individual tiles, displaying with *ngFor) to get the width of this element:
currentWidth:number;
constructor(private el:ElementRef) {}
ngAfterViewInit(): void {
this.currentWidth=this.el.nativeElement.offsetWidth;}
it returns 5. (??) Using .width returns nothing. Also this is not recommended, I'd like another solution, less coupling.
I noticed I can make use of width:inherit; in the css of the individual tile component, which allows me to set the style from the horizontal list component.
<app-tile [style.width.px]="0.9*currentWidth/nDisplayedTiles" [tile]="item"></app-tile>
As the currentWidth value is zero, of course it doesn't work;
I tried setting it in % but the inherits css tag keeps the %, which is not the intended effect.
Why is the app-tile styling not cared about if inherits is not set?
I tried using ViewEncapsulation but it had no effect either.
This looks like a trivial matter though: did I just miss something?
You can use the offsetParent (link) width and create a method to return the value on each of the cells and call it in your [style.width.px], something like the following will work.
The HTMLElement.offsetParent read-only property returns a reference to the element which is the closest (nearest in the containment hierarchy) positioned ancestor element.
stackblitz
ngAfterViewInit(): void {
//added this as the compiler was throwing ExpressionChangedAfterItHasBeenCheckedError
setTimeout(() => {
this.currentWidth=this.el.nativeElement.offsetParent.clientWidth;
});
}
getWidth(): number{
let width:number = 0;
//you may need to change this value to better display the cells
let multiplier = 0.7;
width = (this.currentWidth * multiplier) / this.ndisplayTiles;
width = Math.round(width);
return width;
}
<app-tile [class]="'layout-tile'" [tile]="item" [style.width.px]="getWidth()">
</app-tile>
I am having issues with react Plotly displaying correctly when a graph loaded in a hidden tab is selected. It seems this is a known issue where every tab but the default tab will not resize appropriately because it doesn't know the hidden graph's dimensions.
To get around this I would like to dynamically update the tab height to be equal to the height of the default tab. Something like this: Change div height when tab is selected.
The issue is, I am unable to select the tab height value on DOM load. I thought I could add a componentDidMount function with an evenlistener for window load like such:
constructor(props) {
super(props)
this.state = {
value: 0
};
this.handleLoad = this.handleLoad.bind(this);
}
componentDidMount() {
window.addEventListener('load', this.handleLoad);
}
handleLoad() {
console.log("firstTab height: " + $('#firstTab').offsetHeight)
}
This issue is, the console log is outputting firstTab height: undefined.
When i inspect the web page and put the command $('#firstTab').offsetHeight into the console I am able to come up with a height of 697 px.
I don't want to hardcode the tab pixel size. Can anyone guide me as to why I am failing to grab the element height on window load?
Try using clientHeight property.
componentDidMount() {
const height = document.getElementById('firstTab').clientHeight;
}
I think instead of using event listener, you can do something like this.
componentDidMount() {
const height = this.firstTab.clientHeight;
console.log(height) // => gives you height
}
render() {
return (
<div
id="firstTab"
ref={ (firsTabElement) => { this.divElement = firstTabElement } }
>
Tab Content
</div>
)
}
After the first render if you are not hiding or putting any condition to remove the firstTab from the DOM. It will be available to you in componentDidMount lifecycle.
I've been trying to integrate infinity inside a defined scrolled area.
My UI is a bunch of inline-block thumbnails (not floated). Grid Layout.
Infinity works perfect inside my page when it occupy the whole page width & height, and each element is block level, with simple DOM inside.
But when create a little more advanced UI, with grid interface, and an infinity area to scroll inside a container (ListView's height isn't defined. It's container does), then all gets wrong.
Even more than that. If I give 100% to HTML & Body, infinity fails. it calculates wrong listView`s height.
How to solve this? Grid UI is a desired & common one.
JS Fiddle Demos:
All 1300 elements are block-level - #OK
ListItem (CSS) Width & Height defined - #OK
ListItem as inline-block - #Broken
Code Example (Infinity NG Integration)
var demoApp = angular.module("demo", []);
demoApp.controller("demoCtrl", function($scope) {
$scope.items = [];
for(var i = 0; i < 1300; i++) {
$scope.items.push({ title: "Item " + i });
}
});
demoApp.directive("infinityScroll", function() {
'use strict';
return {
restrict: "A",
transclude: true,
link: function(scope, elm, $attrs) {
scope.listView = new infinity.ListView($(elm));
}
};
});
demoApp.directive("infinityItem", function() {
'use strict';
return {
restrict: "A",
link: function(scope, element, attrs) {
scope.listView.append(element);
}
}
});
PostScript: I noticed in the API Reference, that ListItem has width & Height properties. Same as ListView.
I couldn't find how to implement it, Inside the build code itself, i haven't seen how to pass this properties to the object.
Sorry if its obvious thing, and its possible to do that.
Will appreciate any help.
Thanks.
Actually right now I discovered my problem.
2 elements that messed up with my UI where actually - Overflow:Hidden for my Body,HTML, and Height:100% for a page container.
I have removed Overflow:Hidden, and Height from the page container (not ListView!) and all is fine.
'useElementScroll:true' and .scrollable classname did not assisted me, and prevented me from needing do this actions.
Now my UI is impacted, and I need to see how I`ll solve it.
Edit:
I have opened an issue at airbnb git, and I hope they will pay attention to this. Not been able to set a father and relate only to him, is an issue that adds complexity.
https://github.com/airbnb/infinity/issues/46
I've got a list with list-style-none which needs to be able to add new items to itself via Ajax and have the background expand appropriately when it does. Adding via Ajax is easy, but every solution I try for the background fails me. I don't know if it's even possible; is it? I'm using a grid like this one:
http://jqueryui.com/demos/sortable/#display-grid
Both WebKit and Firebug are showing me skinny, empty bars when I hover over the enclosing divs and/or the enclosing ul tag. It appears that the minute you set a list loose with list-style-none and float:wherever, you give up control over its background. But that can't be right.
This is something I've run into a number of times. The problem is that floated elements aren't part of the normal box model, so they don't cause their parent elements to expand unless their parent elements are also floated. So if possible, float the ul or containing div.
Edit:
See quirksmode for another css-only workaround.
Could you provide a sample of your code? Also, why does the list have display:none set?
For instance, should be as simple as this:
HTML:
<ul id="dest"></ul>
JS:
// Simplified example, most likely wrapped in $.ajax
// This is the AJAX response function
function(data, response) {
var items = json.parse(data);
$.each(items, function() {
// Assumes item has a name property
$('#dest').append($('<li>' + this.name + '</li>'));
});
}
Should be just that simple. You shouldn't need the hide the list initially, as you can simply append list items and have the display update appropriately.
Hope that helps.
You need to explicitly set the width and height for the area.
Check out this link for Horizontal Scrolling: http://valums.com/scroll-menu-jquery/
Here is the script:
$(function(){
//Get our elements for faster access and set overlay width
var div = $('div.sc_menu'),
ul = $('ul.sc_menu'),
// unordered list's left margin
ulPadding = 15;
//Get menu width
var divWidth = div.width();
//Remove scrollbars
div.css({overflow: 'hidden'});
//Find last image container
var lastLi = ul.find('li:last-child');
//When user move mouse over menu
div.mousemove(function(e){
//As images are loaded ul width increases,
//so we recalculate it each time
var ulWidth = lastLi[0].offsetLeft + lastLi.outerWidth() + ulPadding;
var left = (e.pageX - div.offset().left) * (ulWidth-divWidth) / divWidth;
div.scrollLeft(left);
});
});
Basically, you need to update the ulWidth and divWidth when you add the new item.
Then just set the background image to repeat horizontally and you should be set.
ul.sc_menu {background:transparent url(image.png) repeat scroll 0 0;height:100px}
Note: You will need to set the height; otherwise you will not see the background because the li are floated.
For dealing with the float element, maybe you should know it's characteristic, gotcha, and how to deal with it.
See the links below, it also have demo, so you can understand the concept:
http://www.smashingmagazine.com/2009/10/19/the-mystery-of-css-float-property/
http://www.smashingmagazine.com/2007/05/01/css-float-theory-things-you-should-know/
http://aloestudios.com/2009/12/goodbye-overflow-clearing-hack/
and
http://aloestudios.com/misc/overflow/