Moving Javascript Buttons to lightning alternatives

As locker service is being introduced, Below are the alternatives with the required functionalities that were fulfilled by custom javascript buttons:

JavaScript Button Top 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

Use link:
https://trailhead.salesforce.com/modules/lex_javascript_button_migration/units/javascript_button_alternatives

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