Most Important and Commonly Asked Salesforce Interview Questions on Lightning Web Components

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Q 1: What is Lightning Web Component ?
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Q 2: What was the need Lightning Web Component ?
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Q 3: What difference you feel while working with Lightning Web Component as compared to Aura Component?
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Q 4: What are benefits of LWC?
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Q 5: Can we use LWC inside Aura and Vice-Versa?
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Q 6: Can we communicate between aura and LWC Components?
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Q 7: What are life Cycle Hooks in LWC?
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Q 8: What are decorators in LWC?
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Q 9:What is use of @api and @track Decorators?
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Q 10: Explain @wire decorator?
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Q 11: Is it mandatory to write cacheable = true for aura enabled method bind with @wire decorator?
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Q 12: What is imperative call to Server in LWC?
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Q 13: Can we write cacheable = true on server side method called using imperative way in LWC?
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Q 14: What is one-way binding and two way binding. Which one is there in LWC?
   • Lightning Web Components: One Way Binding ...  
Q 15: Can we make the Wire method to refresh forcefully and bring fresh data from server?
Q 16: What are custom Events in LWC?
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Q 17: How can we communicate from parent component to child component in LWC ?
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Q 18: How can we communicate from child component to parent component in LWC ?
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Q 19: How can we pass data from parent component to child component in LWC ?
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Q 20: Can we call child Component method from parent in LWC?
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Q 21: How can we communicate between unrelated components in LWC?
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Q 22: What is pub sub in LWC?
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Q 23: What is Lightning Message Service in LWC?
Q 24: Explain the Folder Structure of LWC Component?
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Q 25: Can we include more than one JavaScript file in LWC Component?
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Q 26: Can we include more than one HTML file in LWC Component?
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Q 27: How can we include LWC Component inside Home Page, Record Page or App Page in Salesforce?
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Q 28: How can we add Spinners in LWC?
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Q 29: How can we add Toast Messages in LWC?
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Q 30: How to include LWC Component inside VF Page?
Q 31: How to communicate between Aura and LWC component?
Q 32: What is Validity Attribute in LWC?
   • Lightning Web Components:Validity Attribut...  
Q 33: How to set custom validity in LWC?
   • Lightning Web Components:Validity Attribut...  


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