合并javascript对象数组

Question

This is the array of javascript objects. I want these javascript objects will merge into a single javascript object according to their same property value.

This is the original array:

const array = [
 {email: 'jon@endtest-mail.io', name: 'Jon', role: 'Player', Education: {…}},
 {email: 'jon@endtest-mail.io', name: 'Jon', role: 'Player', Skills: {…}},
 {email: 'jon@endtest-mail.io', name: 'Jon', role: 'Player', Total: {…}},
 {email: 'jon@endtest-mail.io', name: 'Jon', role: 'Player', Personal: {…}},
 {email: 'tayyab@endtest-mail.io', name: 'Tayyab', role: 'Lead', Ethics: {…}},
 {email: 'tayyab@endtest-mail.io', name: 'Tayyab', role: 'Lead', Total: {…}},
 {email: 'arya@endtest-mail.io', name: 'Arya', role: 'Banker', Total: {…}},
 {email: 'arya@endtest-mail.io', name: 'Arya', role: 'Banker', Skills: {…}},
 {email: 'arya@endtest-mail.io', name: 'Arya', role: 'Banker', Personal: {…}},
 {email: 'arya@endtest-mail.io', name: 'Arya', role: 'Banker', Education: {…}},
]

This is the required array:

const array = [
 {email: 'jon@endtest-mail.io', name: 'Jon', role: 'Player', Education: {…}, Skills: {…}, Total: {…}, Personal: {…}},
 {email: 'tayyab@endtest-mail.io', name: 'Tayyab', role: 'Lead', Ethics: {…}, Total: {…}},
 {email: 'arya@endtest-mail.io', name: 'Arya', role: 'Banker', Total: {…}, Skills: {…}, Personal: {…}, Education: {…}},
]

Like email, name, and role all three have the same property and property value. It would merge into one javascript object and the others remain the same. Kindly provide the solution in React.js/Javascript . Thanks

Answer 1

A good case to apply reduce method, try this code:

 const array = [ {email: 'jon@endtest-mail.io', name: 'Jon', role: 'Player', Education: {}}, {email: 'jon@endtest-mail.io', name: 'Jon', role: 'Player', Skills: {}}, {email: 'jon@endtest-mail.io', name: 'Jon', role: 'Player', Total: {}}, {email: 'jon@endtest-mail.io', name: 'Jon', role: 'Player', Personal: {}}, {email: 'tayyab@endtest-mail.io', name: 'Tayyab', role: 'Lead', Ethics: {}}, {email: 'tayyab@endtest-mail.io', name: 'Tayyab', role: 'Lead', Total: {}}, {email: 'arya@endtest-mail.io', name: 'Arya', role: 'Banker', Total: {}}, {email: 'arya@endtest-mail.io', name: 'Arya', role: 'Banker', Skills: {}}, {email: 'arya@endtest-mail.io', name: 'Arya', role: 'Banker', Personal: {}}, {email: 'arya@endtest-mail.io', name: 'Arya', role: 'Banker', Education: {}}, ] let result = Object.values(array.reduce((acc, {name, ...rest}) => { acc[name] = {...acc[name], ...{name, ...rest}}; return acc; }, {})); console.log(result);

Answer 2

Using reduce and Object.values

 const array = [ {email: 'jon@endtest-mail.io', name: 'Jon', role: 'Player', Education: {}}, {email: 'jon@endtest-mail.io', name: 'Jon', role: 'Player', Skills: {}}, {email: 'jon@endtest-mail.io', name: 'Jon', role: 'Player', Total: {}}, {email: 'jon@endtest-mail.io', name: 'Jon', role: 'Player', Personal: {}}, {email: 'tayyab.ejaz@endtest-mail.io', name: 'Tayyab', role: 'Lead', Ethics: {}}, {email: 'tayyab.ejaz@endtest-mail.io', name: 'Tayyab', role: 'Lead', Total: {}}, {email: 'arya@endtest-mail.io', name: 'Arya', role: 'Banker', Total: {}}, {email: 'arya@endtest-mail.io', name: 'Arya', role: 'Banker', Skills: {}}, {email: 'arya@endtest-mail.io', name: 'Arya', role: 'Banker', Personal: {}}, {email: 'arya@endtest-mail.io', name: 'Arya', role: 'Banker', Education: {}}, ] const result = Object.values(array.reduce((acc, item) => { // build key with unique props const key = [item.email, item.name, item.role].join("-"); // assign properties to a new object // if object does not exist with the key it uses empty object acc[key] = {...(acc[key] || {}), ...item}; return acc; }, {})); console.log(result);