Lightning web component is a new programming model for building Lightning Components.
Whenever you created lightning web components then you can see three type of files:-
1)Template:- Templae is a HTML file where we are able to write HTML element table and build user interface.
2)JavaScript:- It's hold function and business logic.
3)XML Meta:- It's provide the information about the components. We can define where this lightning web component should be exposed.
Whenever we created a lightning web component then it generate three accessory files.
a) HTML:- We build user interface.
b) JavaScript:- I JavaScript file we always have import statement, and this import statement in the lightning element mark.
And Export statement is there which is defined a class and class name will be lightning web component name.
c) Meta:- This is configuration file of web component. Here we can see isExposed="false" that means if it it's false we can not exposing lightning web component to any app builder. whenever we include a lightning web component in app builder now first thing is make isExposed active is true and you have to configure targets.
For Example:-
lightning__AppPage
lightning__RecordPage
lightning__HomePage
That means component will be exposed AppPage, RecordPage and HomePage in the lightning experiences. And we can have optional files also, we can include CSS file and SVG files also.
We can not implements lightning web components in developer console.
It is a the Salesforce implementation for that new breed of lightning framework build on standards. it can have custom elements, templates, shadow DOM, decorators, modules,etc..
What are Required files in lightning web component?Whenever you created lightning web components then you can see three type of files:-
1)Template:- Templae is a HTML file where we are able to write HTML element table and build user interface.
2)JavaScript:- It's hold function and business logic.
3)XML Meta:- It's provide the information about the components. We can define where this lightning web component should be exposed.
Whenever we created a lightning web component then it generate three accessory files.
a) HTML:- We build user interface.
b) JavaScript:- I JavaScript file we always have import statement, and this import statement in the lightning element mark.
And Export statement is there which is defined a class and class name will be lightning web component name.
c) Meta:- This is configuration file of web component. Here we can see isExposed="false" that means if it it's false we can not exposing lightning web component to any app builder. whenever we include a lightning web component in app builder now first thing is make isExposed active is true and you have to configure targets.
For Example:-
That means component will be exposed AppPage, RecordPage and HomePage in the lightning experiences. And we can have optional files also, we can include CSS file and SVG files also.
We can not implements lightning web components in developer console.
To know more live demo in LWC, Use this link..
What is Lightning Web Components?
![What is Lightning Web Components?]()
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