Question

116

Typescript : Check if object exist in array by value

rated 0 times [ 117] [ 1] / answers: 1 / hits: 46524 / 6 Years ago, tue, july 24, 2018, 12:00:00

I have this data:

roles = [

{roleId: 69801, role: ADMIN}

{roleId: 69806, role: SUPER_ADMIN}

{roleId: 69805, role: RB}

{roleId: 69804, role: PILOTE}

{roleId: 69808, role: VENDEUR}

{roleId: 69807, role: SUPER_RB}

]

i have to filter my table to check if there is an object containing a specifie value of role .

My function should look like this :

checkRoleExistence(role){



// if role exists on one of the objects return true

// else returne false

}

to use it i would do s.th like this :

let ifExists = this.checkRoleExistence(PILOTE) ;

I would like to use the filter function of Ecmascript .

Suggestions ?

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briarc

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3 Years ago

answered 6 Years ago chase · Accepted Answer

You can use some method and destructuring.

let roles = [ {roleId: 69801, role: ADMIN}, {roleId: 69806, role: SUPER_ADMIN}, {roleId: 69805, role: RB}, {roleId: 69804, role: PILOTE}, {roleId: 69808, role: VENDEUR}, {roleId: 69807, role: SUPER_RB} ]



const checkRoleExistence = roleParam => roles.some( ({role}) => role == roleParam)



console.log(checkRoleExistence(ADMIN));

console.log(checkRoleExistence(RA));

console.log(checkRoleExistence(RB));