I need to create an array of object literals like this:
var myColumnDefs = [ {key:"label", sortable:true, resizeable:true}, {key:"notes", sortable:true,resizeable:true},...... In a loop like this:
for (var i = 0; i < oFullResponse.results.length; i++) { console.log(oFullResponse.results[i].label); } The value of key should be results[i].label in each element of the array.
var arr = []; var len = oFullResponse.results.length; for (var i = 0; i < len; i++) { arr.push({ key: oFullResponse.results[i].label, sortable: true, resizeable: true }); } 
var obj to make the code clearer, of course you can skip it, you can write the whole script in one line if you wish :)
RaYell's answer is good - it answers your question.
It seems to me though that you should really be creating an object keyed by labels with sub-objects as values:
var columns = {}; for (var i = 0; i < oFullResponse.results.length; i++) { var key = oFullResponse.results[i].label; columns[key] = { sortable: true, resizeable: true }; } // Now you can access column info like this. columns['notes'].resizeable; The above approach should be much faster and idiomatic than searching the entire object array for a key for each access.
You can do something like that in ES6.
new Array(10).fill().map((e,i) => { return {idx: i} }); If you want to go even further than @tetra with ES6 you can use the Object spread syntax and do something like this:
const john = { firstName: "John", lastName: "Doe" }; const people = new Array(10).fill().map((e, id) => ({ ...john, id })); This will work:
var myColumnDefs = new Object(); for (var i = 0; i < oFullResponse.results.length; i++) { myColumnDefs[i] = ({key:oFullResponse.results[i].label, sortable:true, resizeable:true}); } In the same idea of Nick Riggs but I create a constructor, and a push a new object in the array by using it. It avoid the repetition of the keys of the class:
var arr = []; var columnDefs = function(key, sortable, resizeable){ this.key = key; this.sortable = sortable; this.resizeable = resizeable; }; for (var i = 0; i < len; i++) { arr.push((new columnDefs(oFullResponse.results[i].label,true,true))); } I'd create the array and then append the object literals to it.
var myColumnDefs = []; for ( var i=0 ; i < oFullResponse.results.length; i++) { console.log(oFullResponse.results[i].label); myColumnDefs[myColumnDefs.length] = {key:oFullResponse.results[i].label, sortable:true, resizeable:true}; } 
var myColumnDefs = new Array(); for (var i = 0; i < oFullResponse.results.length; i++) { myColumnDefs.push({key:oFullResponse.results[i].label, sortable:true, resizeable:true}); } 
[] instead of new Array().