Tag Archives: Lightning Web Component

Get Current User Id in Lightning Web Component

To get current user id in Lightning Web Component, we need to import the "@salesforce/user/Id" Salesforce scoped module.

LWC.html

<template>
    <div class="slds-text-heading_large slds-text-align_center">
        User Id : {currentUserId}
    </div>
</template>

LWC.js

import { LightningElement } from 'lwc';
import UserId from '@salesforce/user/Id';

export default class UserInformation extends LightningElement {
    currentUserId = UserId;
}

Output:

Progress Indicator in Lightning Web Component

LWCProgressIndicator.html

<template>
    <div class="slds-theme_default">
        <div class="slds-p-around_medium">
            <lightning-progress-indicator type="path" current-step={selectedStep}>
                <lightning-progress-step label="Step1" onstepfocus={selectStep1} value="Step1">
                </lightning-progress-step>
                <lightning-progress-step label="Step2" onstepfocus={selectStep2} value="Step2">
                </lightning-progress-step>
                <lightning-progress-step label="Step3" onstepfocus={selectStep3} value="Step3">
                </lightning-progress-step>
                <lightning-progress-step label="Step4" onstepfocus={selectStep4} value="Step4">
                </lightning-progress-step>
            </lightning-progress-indicator>
            
            <div class="slds-m-vertical_medium">
                <lightning-button label="Back" class="slds-m-left_x-small" onclick={handlePrev}></lightning-button>
                <template if:false={isSelectStep4}>
                    <lightning-button variant="brand" class="slds-m-left_x-small" label="Next" onclick={handleNext}></lightning-button>
                </template>
                <template if:true={isSelectStep4}>
                    <lightning-button variant="brand" class="slds-m-left_x-small" label="Finish" onclick={handleFinish}></lightning-button>
                </template>
            </div>
        </div>
    </div>
</template>

LWCProgressIndicator.js

import { LightningElement, track } from 'lwc';

export default class LWCProgressIndicator extends LightningElement {
    @track selectedStep = 'Step1';

    handleNext() {
        var getselectedStep = this.selectedStep;
        if(getselectedStep === 'Step1'){
            this.selectedStep = 'Step2';
        }
        else if(getselectedStep === 'Step2'){
            this.selectedStep = 'Step3';
        }
        else if(getselectedStep === 'Step3'){
            this.selectedStep = 'Step4';
        }
    }

    handlePrev() {
        var getselectedStep = this.selectedStep;
        if(getselectedStep === 'Step2'){
            this.selectedStep = 'Step1';
        }
        else if(getselectedStep === 'Step3'){
            this.selectedStep = 'Step2';
        }
        else if(getselectedStep === 'Step4'){
            this.selectedStep = 'Step3';
        }
    }
     
    handleFinish() {
        alert('Finished...');
        this.selectedStep = 'Step1';
    }
     
    selectStep1() {
        this.selectedStep = 'Step1';
    }

    selectStep2() {
        this.selectedStep = 'Step2';
    }

    selectStep3() {
        this.selectedStep = 'Step3';
    }

    selectStep4() {
        this.selectedStep = 'Step4';
    }

    get isSelectStep4() {
        return this.selectedStep === "Step4";
    }
}

LWCProgressIndicator.js-meta.xml

<?xml version="1.0" encoding="UTF-8"?>
<LightningComponentBundle xmlns="http://soap.sforce.com/2006/04/metadata" fqn="LWCProgressIndicator">
    <apiVersion>46.0</apiVersion>
    <isExposed>true</isExposed>
    <targets>
        <target>lightning__AppPage</target>
        <target>lightning__RecordPage</target>
        <target>lightning__HomePage</target>
    </targets>
</LightningComponentBundle>

Output:

Lightning Web Component Progress Bar

LWCProgressBar.html

<template>
    <div class="slds-theme_default">
        <div class="slds-p-around_medium">
            <lightning-progress-bar value={progress}></lightning-progress-bar>
        </div>
    </div>
</template>

LWCProgressBar.js

import { LightningElement, track } from 'lwc';

export default class LWCProgressBar extends LightningElement {
    @track progress = 0;

    connectedCallback() {
        this._interval = setInterval(() => {
            this.progress = this.progress === 100 ? 0 : this.progress + 1;
        }, 200);
    }
}

LWCProgressBar.js-meta.xml

<?xml version="1.0" encoding="UTF-8"?>
<LightningComponentBundle xmlns="http://soap.sforce.com/2006/04/metadata" fqn="LWCProgressBar">
    <apiVersion>46.0</apiVersion>
    <isExposed>true</isExposed>
    <targets>
        <target>lightning__AppPage</target>
        <target>lightning__RecordPage</target>
        <target>lightning__HomePage</target>
    </targets>
</LightningComponentBundle>

Output:

OnLoad In Lightning Web Component

LWCDemo.html

<template>
    <div class="slds-text-heading_large slds-text-align_center">
        {greeting}
    </div>
</template>  

LWCDemo.js

import { LightningElement, track } from 'lwc';  
  
export default class LWCDemo extends LightningElement {  
  
    @track greeting;  
  
    connectedCallback() {
        this.greeting = 'Hello World!';
    }
}  

Lightning Web Component Modal

LWCModal.html

<template>
    <div class="slds-theme_default">
        <div class="slds-p-around_medium">
            <lightning-button label="Show LWC Modal" variant="brand" onclick={handleOpenModal}>
            </lightning-button>
        </div>
        <template if:true={isOpenModal}>
            <div style="height: 500px;">
                <section role="dialog" tabindex="-1" aria-labelledby="modal-heading-01" aria-modal="true" aria-describedby="modal-content-id-1" class="slds-modal slds-fade-in-open">
                    <div class="slds-modal__container">
                        <header class="slds-modal__header">
                            <button class="slds-button slds-button_icon slds-modal__close slds-button_icon-inverse" title="Close" onclick={handleCloseModal}>
                                <lightning-icon icon-name="utility:close" variant="inverse" alternative-text="Close" size="medium">
                                </lightning-icon>
                                <span class="slds-assistive-text">Close</span>
                            </button>
                            <h2 id="modal-heading-01" class="slds-text-heading_medium slds-hyphenate">LWC Modal Example</h2>
                        </header>
                        <div class="slds-modal__content slds-p-around_medium" id="modal-content-id-1">
                            <div class="slds-text-heading_small slds-text-align_center">
                                Welcome to Biswajeet Samal's Blog
                            </div>
                        </div>
                        <footer class="slds-modal__footer">
                            <lightning-button label="Cancel" variant="neutral" onclick={handleCloseModal}></lightning-button>
                        </footer>
                    </div>
                </section>
                <div class="slds-backdrop slds-backdrop_open"></div>
            </div>
        </template>
    </div>
</template>

LWCModal.js

import {LightningElement, track} from 'lwc';

export default class LWCModal extends LightningElement {
  
    @track isOpenModal = false;

    handleOpenModal() {
        this.isOpenModal = true;
    }
  
    handleCloseModal() {
        this.isOpenModal = false;
    }
}

LWCModal.js-meta.xml

<?xml version="1.0" encoding="UTF-8"?>
<LightningComponentBundle xmlns="http://soap.sforce.com/2006/04/metadata" fqn="LWCModal">
    <apiVersion>46.0</apiVersion>
    <isExposed>true</isExposed>
    <targets>
        <target>lightning__AppPage</target>
        <target>lightning__RecordPage</target>
        <target>lightning__HomePage</target>
    </targets>
</LightningComponentBundle>

Output: