score:1
i'll try to be as brief as possible:
there are many ways you can communicate between components. the ones that you mentioned (using the @input()
and @output
decorators) are basically as follows:
@input()
- receives data from parent
this is as simple as it gets. you pass data to the child component like so:
<!-- one-way binding - value moves from the parent to child -->
<app-custom-component [childvar]="parentvar" ></app-custom-component>
and declare it in the child component's .ts
like so:
// you will have to import input from @angular/core
@input() childvar: string;
@output()
- sends data to parent
it behaves just like an event. in fact, it is an event:
// import output and eventemitter from @angular/core as well
@output childchange: new eventemitter<string>();
then the parent has to listen to it:
<!-- the $event carries the content you want to grab -->
<app-custom-component2 (childchange)="parentdoessomething($event)"></app-custom-component2>
with this, you can receive data from one component in the parent and send it to another. there are other ways you can communicate between components, like with services.
actually, take a look at this article. it covers a lot of stuff.
example using @input()
and @output()
i made a quick little example in stackblitz. check it out in case you're having trouble implementing it.
Source: stackoverflow.com
Related Query
- Send data from a form to another component of the same level -angular
- Passing an Array from a Flask view to the javascript code of another view
- load external json data file in to chartjs in the angular component
- React - How can I pass API data from one component to another in a different js file?
- graph data from a angular form to ChartJs
- How to differentiate the data of one topic or another coming from Mercure hub if the client is suscribed to two topics
- How to set the data of chart in angular which is taken from the backend nodejs api that is store in mongodb and showing on the html page
- how do i use the numbers i key in from a form as the input data for chartjs
- Chart JS show multiple data points for the same label
- Chart.js – how to remove data entries from the tooltip?
- Angular chart how to show the legend data value by default along with legend name
- Charts.js - Need to remove the data value from the Tooltip
- vue-chartjs load data from parent component
- Calling data from search bar to chart.js graph in Angular
- format JSON data for chart.js from Angular 4 observable
- How can I load multiple Chartjs charts with different data on the same page?
- how can i send a list of numbers from views.py to a chartjs file im using for the front?
- How do I customize y-axis labels and randomly pick the value from the data range for x-axis in Chart js
- Chart.js creating multiple Charts in Angular in same Component
- Angular 2: How to pass my API data to graph and Display the Graph with data
- How can I prevent the hover data from displaying in Chart.JS?
- Ajax won't retrieve the data from my script
- Prevent label of another data from being toggled whenever a label from one data is toggled
- Update the chart data from an array stored in a variable on button click
- Update Chart js chart dynamically in angular 2 from data getting from nodejs service
- How to reuse a Chartjs Chart component in with different Data and get past the **Canvas is already in use** error?
- Change the hover data value from to string
- How to send data to chart js using angular
- Chart.js and Angular 8 - Dynamically updating Chart.js labels and data from *ngfor
- How to show tooltip value of all data falling on the same axis in chart js?
More Query from same tag
- How can I get the active label element on click in ChartJS?
- Update the Chartjs push data with ajax
- How to make bars change color based on value in chartsjs
- Setting default to 0 in vuechart.js HorizontalBar
- Unexpected text "NaN" appearing near y-axis of the Chart
- How can i do so that my chartjs updates everytime data is inserted or by time interval?
- Chart.js 2.2.1 - Chart doesn't render correctly before resizing
- How to add second Y-axis for Bar and Line chart in Chart.js?
- ChartJS - Show percentage on hover (AngularJS)
- How to custom legend with react-chartjs-2
- Chart.js annotation horizontal line on double y-axis graph
- Can't parse data from json
- How to change line segment color based on label value in chart.js?
- Chartjs line graph point hover animation buggy / jumpy
- How can I show "No Data" message in Pie Chart when there is no data using VueJS?
- Exporting chart.js charts to svg using canvas2svg.js
- chartjs-node-canvas doughnut chart
- Chart.js custom tooltip events
- Donut Chart : Trigger legend or pie click event while selecting outside filter state change
- Using CHARTJS with a JavaScript Array
- Cursor pointer change onhover not working in chartjsv3
- How to map json array to two different array for chart
- Chart.Js vers2 multiline to version 3
- Chart.js positive/negative values fill with out twist
- How can I change only a specific option in a chart with chart.js?
- Chart.js - How to show loading animation before plotting chart
- chartjs - How to use differente color if value is lower than previous value?
- Chart.js - Writing Labels Inside of Horizontal Bars?
- Chart.js br chart only displaying first value
- Chart.js showing time (HH:MM:SS - 24 hour clock) on xAxis