Swap object keys and values

 // Write a function that takes an object as argument

// Somehow, the properties and keys of the object got mixed up

// Swap the Javascript object's key with its values and return the resulting object

function

myFunction ( obj )

{

return 

}

myFunction({z:'a',y:'b',x:'c',w:'d'})

Expected

{a:'z',b:'y',c:'x',d:'w'}

myFunction({2:'a',4:'b',6:'c',8:'d'})

Expected

{a:'2',b:'4',c:'6',d:'8'}

myFunction({a:1,z:24})

Expected

{1:'a',24:'z'}

Multiply all object values by x

 // Write a function that takes an object (a) and a number (b) as arguments

// Multiply all values of 'a' by 'b'

// Return the resulting object

function myFunction( a, b )

{

return 

}

myFunction({a:1,b:2,c:3},3)

Expected

{a:3,b:6,c:9}

myFunction({j:9,i:2,x:3,z:4},10)

Expected

{j:90,i:20,x:30,z:40}

myFunction({w:15,x:22,y:13},6)

Expected

{w:90,x:132,y:78}

Sum object values

 // Write a function that takes an object (a) as argument

// Return the sum of all object values

function myFunction( a ) {

return 

}

myFunction({a:1,b:2,c:3})

Expected

6

myFunction({j:9,i:2,x:3,z:4})

Expected

18

myFunction({w:15,x:22,y:13})

Expected

50