In this blog, I am explaining how we can call Child method with multiple parameters' from Child component to Parent component in LWC.
parentCmp.html
<template>
<div>
<strong>I am from inside Parent</strong>
<br/>
<div>
<lightning-button
variant="brand"
label="Change Date"
title="Change Date"
onclick={handleDateClick}>
</lightning-button>
</div>
</div>
</template>
parentCmp.js
import { LightningElement } from 'lwc';
export default class ParentCmp extends LightningElement {
handleDateClick(){
this.template.querySelector('c-child-cmp').childMethod('From Parent', '42');
}
}
childCmp.html
<template>
<strong>I am from inside Child</strong>
<p> message - {message} </p>
<p> pageno - {pageno} </p>
<p> Date is - {date} </p>
</template>
childCmp.js
import { LightningElement, api, track } from 'lwc';
export default class ChildCmp extends LightningElement {
@api message ;
@api pageno;
@track date = new Date();
@api
childMethod(msgFromParent, pageNumber){
this.date = new Date();
this.message = msgFromParent;
this.pageno = pageNumber;
}
}
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