I have multiple css classes that make up a button using SCSS.
.ghost-button {
// CSS goes here
}
.ghost-button-label {
// CSS goes here
}
.plus-circle {
//CSS goes here
}
Using Angular I can control the disabled state using the following feature.
[class.disabled]="booleanFlag"
I wanted to have a disabled state for this button with out having multiple disabled classes like so,
.ghost-button.disabled {
// CSS goes here
}
.ghost-button-label.disabled {
// CSS goes here
}
.plus-circle.disabled {
//CSS goes here
}
This is an example of what I am trying to do. This did not work for me.
.ghost-button .ghost-button-label .plus-circle-position .disabled {
//CSS goes here
}
Here is the markup I use for the button,
<div style="padding-top: 10px" (click)="handleClickAdd($event)">
<div class="ghost-button ghost-button-label icon-custom icon-margin plus-circle plus-circle-position" [class.disabled]="blockAdditions">
<div>
<div>Add</div>
</div>
</div>
</div>
Is there a way to do this? Thanks.
This doesn't work because it means each class is a descendant of the previous:
.ghost-button .ghost-button-label .plus-circle-position .disabled {
//CSS goes here
}
If you're trying to just select that one div with all four classes, just remove the spaces:
.ghost-button.ghost-button-label.plus-circle-position.disabled {
//CSS goes here
}
If you're trying to select any elements that have the disabled class plus one of the three other classes, then you use commas to separate the different combinations:
.ghost-button.disabled,
.ghost-button-label.disabled,
.plus-circle-position.disabled {
// CSS
}
Of course you could just select .disabled if you want this CSS applied to every element with the disabled class:
.disabled {
// CSS
}
Just be sure to take into account View Encapsulation. You may need to put this CSS in the global style file styles.css if this class exists in more than one component.
Just a note, you are not setting the disabled state here, you are adding a class with the name "disabled". disabled is a boolean attribute you can set via HTML, which you can then select with the pseudo-class :disabled.
button:disabled {
color: red
}
<button>Not Disabled</button>
<button disabled>Disabled</button>
If this is what you were actually trying to do then in Angular it would be:
[disabled]="booleanFlag"
You can target a disabled element with the :disabled pseudo-class https://developer.mozilla.org/en-US/docs/Web/CSS/:disabled
So depending on the relationship between your button/label/plus-circle you should be able to target those as well based on whether the button is disabled. For example, if the button and label are siblings you could do this:
.ghost-button:disabled,
.ghost-button:disabled + .ghost-button-label,
.ghost-button:disabled + .plus-circle {
// CSS goes here
}
That would only work if the label and circle were siblings that come after the button, if they are before the button, you can't select them that way.
I'm just trying to figure out if this is possible or if I need to rethink the way I'm going about things.
Here's a very simple idea of where I'm at
My main list will be constantly having items added and removed by other processes. I use NgFor to generate my items and I'm using the adjacent sibling combinator in my style sheet (+) to add margin-top to all but the first item, then ngClass to apply the class itself.All god so far...
Now I want the value of margin-top to also be dynamic and linked to value coming in from another service.
So my question is just, can anyone give me a way of using the adjacent sibling selector and a dynamic value for the style it applies?
Since rendered CSS won't do variables cross browser yet, one option would be a small script adding a style like this
window.addEventListener('load', function() {
loadStyle(20);
setTimeout(function() { loadStyle(40); }, 1000);
setTimeout(function() { loadStyle(60); }, 2000);
})
function loadStyle(margin) {
var node = document.querySelector('my-app style') || document.createElement("style");
var css = ".my-item+.my-item{margin-top: "+margin+"px;}"
node.type = 'text/css';
if (node.styleSheet){
node.styleSheet.cssText = css;
} else {
node.appendChild(document.createTextNode(css));
}
document.querySelector('my-app').appendChild(node);
}
.my-item{
background-color: red;
}
.my-item+.my-item{
margin-top: 20px;
}
<my-app>
<div class='my-item'>A</div>
<div class='my-item'>B</div>
<div class='my-item'>C</div>
</my-app>
You can use style:
<div *ngFor="let user of userList" [ngClass]="'my-item'" [style.margin]="marginValue">{{user}}</div>
marginValue = '0 0 0 9px';
Im trying to style some autogenerated html. I built a system that allowed me to overlay bootstrap on this autogen stuff and now I want to do some tweaking of whats there.
the autogen produces stuff like this
<dl>...</dl>
Now I want to apply bootstraps dl-horizontal class to that generated tag. Since its generated, I can't simply class it, I can't ID it, nothing. It has to be purely CSS selectors, which is something I know very little about.
What would a CSS tag that does this look like?
you can use jQuery to add a class to your <dl> tag like this:
$( document ).ready(function() {
$("dl").addClass("dl-horizontal");
});
$( document ).ready(function() {
$("dl").addClass("dl-horizontal");
});
.dl-horizontal {
color: red;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<dl>
<dt>Coffee</dt>
<dd>Black hot drink</dd>
<dt>Milk</dt>
<dd>White cold drink</dd>
</dl>
jsFiddle Demo.
There is no option in css to add a class. But you can use children selectors to format if all your elements are the children of the same parent.
For example if your elements are a children of the parent body then:
body > dl
{
color : red;
}
The above code will change the text - color of all the elements that are the children of
I am trying to apply some rules on a set of img elements whose id begins with "sth". I know how to select them:
img [id^=sth]
But is there a way to use this image specific id inside the selector? In other words, can I somehow do this:
img [id^=sth] {
src: id;
}
You can't do that with css but you can use jQuery:
$("div[id^='sph']").each(function() {
$(this).attr("src", this.id);
});
You can only use an attributes value in a pseudo element :before or :after via the content attribute:
div:after{
content:attr(id);
}
Q1. Suppose I want to alter the look of each "item" that a user marks for deletion before the main "delete" button is pressed. (This immediate visual feedback should eliminate the need for the proverbial "are you sure?" dialog box.) The user will check checkboxes to indicate which items should be deleted. If a checkbox is unchecked, that item should revert back to its normal look.
What's the best way to apply or remove the CSS styling?
Q2. Suppose I want to allow each user to personalize how my site is presented. E.g., select from a fixed set of font sizes, allow user-definable foreground and background colors, etc.
What's the best way to apply the CSS styling the user selects/inputs?
Angular provides a number of built-in directives for manipulating CSS styling conditionally/dynamically:
ng-class - use when the set of CSS styles is static/known ahead of time
ng-style - use when you can't define a CSS class because the style values may change dynamically. Think programmable control of the style values.
ng-show and ng-hide - use if you only need to show or hide something (modifies CSS)
ng-if - new in version 1.1.5, use instead of the more verbose ng-switch if you only need to check for a single condition (modifies DOM)
ng-switch - use instead of using several mutually exclusive ng-shows (modifies DOM)
ng-disabled and ng-readonly - use to restrict form element behavior
ng-animate - new in version 1.1.4, use to add CSS3 transitions/animations
The normal "Angular way" involves tying a model/scope property to a UI element that will accept user input/manipulation (i.e., use ng-model), and then associating that model property to one of the built-in directives mentioned above.
When the user changes the UI, Angular will automatically update the associated elements on the page.
Q1 sounds like a good case for ng-class -- the CSS styling can be captured in a class.
ng-class accepts an "expression" that must evaluate to one of the following:
a string of space-delimited class names
an array of class names
a map/object of class names to boolean values
Assuming your items are displayed using ng-repeat over some array model, and that when the checkbox for an item is checked you want to apply the pending-delete class:
<div ng-repeat="item in items" ng-class="{'pending-delete': item.checked}">
... HTML to display the item ...
<input type="checkbox" ng-model="item.checked">
</div>
Above, we used ng-class expression type #3 - a map/object of class names to boolean values.
Q2 sounds like a good case for ng-style -- the CSS styling is dynamic, so we can't define a class for this.
ng-style accepts an "expression" that must evaluate to:
an map/object of CSS style names to CSS values
For a contrived example, suppose the user can type in a color name into a texbox for the background color (a jQuery color picker would be much nicer):
<div class="main-body" ng-style="{color: myColor}">
...
<input type="text" ng-model="myColor" placeholder="enter a color name">
Fiddle for both of the above.
The fiddle also contains an example of ng-show and ng-hide. If a checkbox is checked, in addition to the background-color turning pink, some text is shown. If 'red' is entered in the textbox, a div becomes hidden.
I have found problems when applying classes inside table elements when I had one class already applied to the whole table (for example, a color applied to the odd rows <myClass tbody tr:nth-child(even) td>). It seems that when you inspect the element with Developer Tools, the element.style has no style assigned. So instead of using ng-class, I have tried using ng-style, and in this case, the new CSS attribute does appear inside element.style. This code works great for me:
<tr ng-repeat="element in collection">
[...amazing code...]
<td ng-style="myvar === 0 && {'background-color': 'red'} ||
myvar === 1 && {'background-color': 'green'} ||
myvar === 2 && {'background-color': 'yellow'}">{{ myvar }}</td>
[...more amazing code...]
</tr>
Myvar is what I am evaluating, and in each case I apply a style to each <td> depending on myvar value, that overwrites the current style applied by the CSS class for the whole table.
UPDATE
If you want to apply a class to the table for example, when visiting a page or in other cases, you can use this structure:
<li ng-class="{ active: isActive('/route_a') || isActive('/route_b')}">
Basically, what we need to activate a ng-class is the class to apply and a true or false statement. True applies the class and false doesn't. So here we have two checks of the route of the page and an OR between them, so if we are in /route_a OR we are in route_b, the active class will be applied.
This works just having a logic function on the right that returns true or false.
So in the first example, ng-style is conditioned by three statements. If all of them are false, no style is applied, but following our logic, at least one is going to be applied, so, the logic expression will check which variable comparison is true and because a non empty array is always true, that will left an array as return and with only one true, considering we are using OR for the whole response, the style remaining will be applied.
By the way, I forgot to give you the function isActive():
$rootScope.isActive = function(viewLocation) {
return viewLocation === $location.path();
};
NEW UPDATE
Here you have something I find really useful. When you need to apply a class depending on the value of a variable, for example, an icon depending on the contents of the div, you can use the following code (very useful in ng-repeat):
<i class="fa" ng-class="{ 'fa-github' : type === 0,
'fa-linkedin' : type === 1,
'fa-skype' : type === 2,
'fa-google' : type === 3 }"></i>
Icons from Font Awesome
This works well when ng-class can't be used (for example when styling SVG):
ng-attr-class="{{someBoolean && 'class-when-true' || 'class-when-false' }}"
(I think you need to be on latest unstable Angular to use ng-attr-, I'm currently on 1.1.4)
I have published an article on working with AngularJS+SVG. It talks about this issue and numerous others. http://www.codeproject.com/Articles/709340/Implementing-a-Flowchart-with-SVG-and-AngularJS
span class="circle circle-{{selectcss(document.Extension)}}">
and code
$scope.selectcss = function (data) {
if (data == '.pdf')
return 'circle circle-pdf';
else
return 'circle circle-small';
};
css
.circle-pdf {
width: 24px;
height: 24px;
font-size: 16px;
font-weight: 700;
padding-top: 3px;
-webkit-border-radius: 12px;
-moz-border-radius: 12px;
border-radius: 12px;
background-image: url(images/pdf_icon32.png);
}
This solution did the trick for me
<a ng-style="{true: {paddingLeft: '25px'}, false: {}}[deleteTriggered]">...</a>
You can use ternary expression. There are two ways to do this:
<div ng-style="myVariable > 100 ? {'color': 'red'} : {'color': 'blue'}"></div>
or...
<div ng-style="{'color': (myVariable > 100) ? 'red' : 'blue' }"></div>
Another option when you need a simple css style of one or two properties:
View:
<tr ng-repeat="element in collection">
[...amazing code...]
<td ng-style="{'background-color': getTrColor(element.myvar)}">
{{ element.myvar }}
</td>
[...more amazing code...]
</tr>
Controller:
$scope.getTrColor = function (colorIndex) {
switch(colorIndex){
case 0: return 'red';
case 1: return 'green';
default: return 'yellow';
}
};
See the following example
<!DOCTYPE html>
<html ng-app>
<head>
<title>Demo Changing CSS Classes Conditionally with Angular</title>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.0.7/angular.min.js"></script>
<script src="res/js/controllers.js"></script>
<style>
.checkboxList {
border:1px solid #000;
background-color:#fff;
color:#000;
width:300px;
height: 100px;
overflow-y: scroll;
}
.uncheckedClass {
background-color:#eeeeee;
color:black;
}
.checkedClass {
background-color:#3ab44a;
color:white;
}
</style>
</head>
<body ng-controller="TeamListCtrl">
<b>Teams</b>
<div id="teamCheckboxList" class="checkboxList">
<div class="uncheckedClass" ng-repeat="team in teams" ng-class="{'checkedClass': team.isChecked, 'uncheckedClass': !team.isChecked}">
<label>
<input type="checkbox" ng-model="team.isChecked" />
<span>{{team.name}}</span>
</label>
</div>
</div>
</body>
</html>
As of AngularJS v1.2.0rc, ng-class and even ng-attr-class fail with SVG elements (They did work earlier, even with normal binding inside the class attribute)
Specifically, none of these work now:
ng-class="current==this_element?'active':' ' "
ng-attr-class="{{current==this_element?'active':' '}}"
class="class1 class2 .... {{current==this_element?'active':''}}"
As a workaround, I've to use
ng-attr-otherAttr="{{current==this_element?'active':''}}"
and then style using
[otherAttr='active'] {
... styles ...
}
One more (in the future) way to conditionally apply style is by conditionally creating scoped style
<style scoped type="text/css" ng-if="...">
</style>
But nowadays only FireFox supports scoped styles.
There is one more option that I recently discovered that some people may find useful because it allows you to change a CSS rule within a style element - thus avoiding the need for repeated use of an angular directive such as ng-style, ng-class, ng-show, ng-hide, ng-animate, and others.
This option makes use of a service with service variables which are set by a controller and watched by an attribute-directive I call "custom-style". This strategy could be used in many different ways, and I attempted to provide some general guidance with this fiddle.
var app = angular.module('myApp', ['ui.bootstrap']);
app.service('MainService', function(){
var vm = this;
});
app.controller('MainCtrl', function(MainService){
var vm = this;
vm.ms = MainService;
});
app.directive('customStyle', function(MainService){
return {
restrict : 'A',
link : function(scope, element, attr){
var style = angular.element('<style></style>');
element.append(style);
scope.$watch(function(){ return MainService.theme; },
function(){
var css = '';
angular.forEach(MainService.theme, function(selector, key){
angular.forEach(MainService.theme[key], function(val, k){
css += key + ' { '+k+' : '+val+'} ';
});
});
style.html(css);
}, true);
}
};
});
well i would suggest you to check condition in your controller with a function returning true or false .
<div class="week-wrap" ng-class="{today: getTodayForHighLight(todayDate, day.date)}">{{day.date}}</div>
and in your controller check the condition
$scope.getTodayForHighLight = function(today, date){
return (today == date);
}
One thing to watch is - if the CSS style has dashes - you must remove them. So if you want to set background-color, the correct way is:
ng-style="{backgroundColor:myColor}"
Here's how i conditionally applied gray text style on a disabled button
import { Component } from '#angular/core';
#Component({
selector: 'my-app',
styleUrls: [ './app.component.css' ],
template: `
<button
(click)='buttonClick1()'
[disabled] = "btnDisabled"
[ngStyle]="{'color': (btnDisabled)? 'gray': 'black'}">
{{btnText}}
</button>`
})
export class AppComponent {
name = 'Angular';
btnText = 'Click me';
btnDisabled = false;
buttonClick1() {
this.btnDisabled = true;
this.btnText = 'you clicked me';
setTimeout(() => {
this.btnText = 'click me again';
this.btnDisabled = false
}, 5000);
}
}
Here's a working example:
https://stackblitz.com/edit/example-conditional-disable-button?file=src%2Fapp%2Fapp.component.html