javascript - How do I build an array in JS where some elements are conditional? -

i want build array may or may not contain elements, depending on user roles. can achieve @ "build time", or have first create array without conditional elements, , manually add them splice option? order matters!

this want achieve...:

var mylist = [     { obj1 },     { obj2 },     if userrolex==true {         { obj3 },     }     { obj4 }, ]; 

any thoughts?

you can build array elements needed:

var = 0; var mylist = []; mylist[i++] = obj1; mylist[i++] = obj2; if (userrolex) {     mylist[i++] = obj3; } mylist[i++] = obj4; 

you can skip indexes or provide non-numeric indexes so:

mylist[42] = obj5; mylist['foo'] = 'bar'; 

javascript's arrays can used maps. can "clear" entry setting undefined.