{"id":864,"date":"2023-04-26T05:00:00","date_gmt":"2023-04-26T12:00:00","guid":{"rendered":"https:\/\/www.angulartraining.com\/daily-newsletter\/?p=864"},"modified":"2023-04-25T14:36:59","modified_gmt":"2023-04-25T21:36:59","slug":"how-to-create-your-own-two-way-data-binding-with-angular","status":"publish","type":"post","link":"https:\/\/www.angulartraining.com\/daily-newsletter\/how-to-create-your-own-two-way-data-binding-with-angular\/","title":{"rendered":"How to create your own two-way data binding with Angular?"},"content":{"rendered":"\n

If you’ve ever used [(ngModel)]<\/code> with Angular, you know what two-way data binding is. The idea is to have a variable that works simultaneously as an Input and an Output.<\/p>\n\n\n\n

In today’s post, we will see how to implement such a two-way data binding on our own so that we can use the [()]<\/code> syntax on any of our component properties, such as message<\/code> in the following code:<\/p>\n\n\n

\n
\"\"<\/figure>\n<\/div>\n\n\n

<\/p>\n\n\n\n

Before we get into this tutorial, I want to tease that signal-based components<\/a> will have such two-way data bindings available out of the box with the following syntax – using a model()<\/code> function instead of the @Input<\/code> and @Output<\/code> decorators we’re used to:<\/p>\n\n\n

\n
\"\"<\/figure>\n<\/div>\n\n\n

<\/p>\n\n\n\n

Note that the above feature will not be a part of the initial developer preview of Angular Signals<\/a> coming out in less than two weeks with Angular 16. However, it might be available in developer preview in six months<\/a> with Angular 17.<\/p>\n\n\n\n

In any case, here is the link to my custom two-way data binding tutorial<\/a> and a code example in action on Stackblitz<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

If you’ve ever used [(ngModel)] with Angular, you know what two-way data binding is. The idea is to have a variable that works simultaneously as an Input and an Output. In today’s post, we will see how to implement such a two-way data binding on our own so that we can use the [()] syntax […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4,8,7],"tags":[],"class_list":["post-864","post","type-post","status-publish","format-standard","hentry","category-angular","category-components","category-template-syntax"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.angulartraining.com\/daily-newsletter\/wp-json\/wp\/v2\/posts\/864","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.angulartraining.com\/daily-newsletter\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.angulartraining.com\/daily-newsletter\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.angulartraining.com\/daily-newsletter\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.angulartraining.com\/daily-newsletter\/wp-json\/wp\/v2\/comments?post=864"}],"version-history":[{"count":5,"href":"https:\/\/www.angulartraining.com\/daily-newsletter\/wp-json\/wp\/v2\/posts\/864\/revisions"}],"predecessor-version":[{"id":871,"href":"https:\/\/www.angulartraining.com\/daily-newsletter\/wp-json\/wp\/v2\/posts\/864\/revisions\/871"}],"wp:attachment":[{"href":"https:\/\/www.angulartraining.com\/daily-newsletter\/wp-json\/wp\/v2\/media?parent=864"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.angulartraining.com\/daily-newsletter\/wp-json\/wp\/v2\/categories?post=864"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.angulartraining.com\/daily-newsletter\/wp-json\/wp\/v2\/tags?post=864"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}