Category Archives: JavaScript

JavaScript Confirm Dialog In Lightning Component

Biswajeet September 19, 2019 1 Comment

Lightning Component:

<aura:component implements="flexipage:availableForAllPageTypes,force:appHostable">
    
    <!--Attributes-->
    <aura:attribute name="showConfirmDialog" type="boolean" default="false"/>
    
    <!--Component Start-->
    <div class="slds-m-around_xx-large">
        <lightning:button name="delete" variant="brand" label="Delete" onclick="{!c.handleConfirmDialog}"/>
    </div>
    <!--Component End-->
</aura:component>

Lightning JS Controller:

({
    handleConfirmDialog : function(component, event, helper) {
        var selectedEventId = event.target.id;
        var msg ='Are you sure you want to delete this item?';
        if (!confirm(msg)) {
            console.log('No');
            return false;
        } else {
            console.log('Yes');
            //Write your confirmed logic
        }
    },
})

Output:

Difference Between JavaScript var and let

Biswajeet July 14, 2018 No Comments

var : A variable defined using a var statement is known throughout the function it is defined in, from the start of the function.

Example:

{
    var i = 5;
}
//i can be used here

let : A variable defined using a let statement is only known in the block it is defined in, from the moment it is defined onward.

Example:

{
    let i = 5;
}
//i can be used here

Salesforce JavaScript Buttons To Lightning Alternatives

Biswajeet February 10, 2018 No Comments

JavaScript Button Use Cases	Lightning Alternatives	Declarative/Programmatic
Validate fields (presave)	Quick actions (using default values and/or formulas)	D
Validate fields (presave)	Apex triggers	P
Create records with prepopulated values	Quick actions (using default values and/or formulas)	D
Redirect to a record page	Custom URL buttons	D
Redirect to a Visualforce page	Visualforce quick actions	P
Redirect to a Visualforce page	Lightning actions	P
Prefill values based on inputs	Lightning actions	P
Confirmation pop-up screens	Lightning actions	P
API calls (Salesforce and third-party)	Lightning actions	P
Feedback pop-up screens	Lightning actions	P
Third-party integration	Lightning actions	P
Mass actions on list view records	Custom Visualforce buttons on list views	P

Reference: Trailhead

Salesforce Live Agent Error : Prechat API is not enabled by the specified deployment

Biswajeet December 19, 2017 No Comments

In Live Agent, sometimes we need to pass some values from the page, where Start Chat button is located, to Pre-chat form.

To achieve this, we use liveagent.addCustomDetail() function to set the values. On Pre-chat form page, we use prechat.js and liveagent.details.preChatInit() function to access those details.

But if the “Allow Access to Pre-Chat API” in deployment is not enable, then we will face “Prechat API is not enabled by the specified deployment” JavaScript error.

Follow below steps to enable it.

Go to Setup || Customize || Live Agent || Deployments || Edit or Create your Deployment || Enable “Allow Access to Pre-Chat API” || Save

Lightning Tab With Next And Back Buttons In Lightning Component

Biswajeet November 25, 2017 No Comments

Component:

<!--TabComponent-->
<aura:component>
    <aura:attribute name="selTabId" type="String" default="tab1" />
    <div aura:id="data-entry">
        <lightning:tabset variant="default" selectedTabId="{!v.selTabId}" >
            <lightning:tab label="Mobile" aura:id="tab1" tabindex="1" id="tab1" title="Mobile">
                <p>Apple</p>
                <p>Samsung</p>
                <p>Lenovo</p>
            </lightning:tab>
            
            <lightning:tab label="Laptop" aura:id="tab2" tabindex="2" id="tab2" title="Laptop">
                <p>Apple</p>
                <p>Lenovo</p>
                <p>Dell</p>
            </lightning:tab>  
            
            <lightning:tab label="Tablet" aura:id="tab3" tabindex="3" id="tab3" title="Tablet">
                <p>Apple</p>
                <p>Lenovo</p>
                <p>Dell</p>
            </lightning:tab> 
        </lightning:tabset>
    </div>
    
    <div class="slds-clearfix">
        <div class="slds-float_left">
            <!--disabled the back button on first Tab-->    
            <lightning:button disabled="{!v.selTabId == 'tab1'}" variant="neutral" label="Back" onclick="{!c.back}" />
        </div>
        <div class="slds-float_right">
            <!--disabled the back button on last Tab--> 
            <lightning:button variant="brand" disabled="{!v.selTabId == 'tab3'}" label="Next" onclick="{!c.next}" />
        </div>
    </div>
</aura:component>

Component Controller:

({
    next : function(component, event, helper) {
        //Get the current selected tab value
        var currentTab = component.get("v.selTabId");
        
        if(currentTab == 'tab1'){
            component.set("v.selTabId" , 'tab2');   
        }else if(currentTab == 'tab2'){
            component.set("v.selTabId" , 'tab3');     
        }
    },
    
    back : function(component, event, helper) {
        //Get the current selected tab value  
        var currentTab = component.get("v.selTabId");
        
        if(currentTab == 'tab2'){
            component.set("v.selTabId" , 'tab1');     
        } else if(currentTab == 'tab3'){
            component.set("v.selTabId" , 'tab2');     
        }
    }
})