How to create an array of object literals in a loop?
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 }); }
object-literal
JavaScript property access: dot notation vs. brackets?
(Sourced from here.) Square bracket notation allows the use of characters that can’t be used with dot notation: var foo = myForm.foo[]; // incorrect syntax var foo = myForm[“foo[]”]; // correct syntax including non-ASCII (UTF-8) characters, as in myForm[“ダ”] (more examples). Secondly, square bracket notation is useful when dealing with property names which vary in … Read more
How to use a variable for a key in a JavaScript object literal?
{ thetop : 10 } is a valid object literal. The code will create an object with a property named thetop that has a value of 10. Both the following are the same: obj = { thetop : 10 }; obj = { “thetop” : 10 }; In ES5 and earlier, you cannot use a … Read more
Self-references in object literals / initializers
Well, the only thing that I can tell you about are getter: var foo = { a: 5, b: 6, get c() { return this.a + this.b; } } console.log(foo.c) // 11 This is a syntactic extension introduced by the ECMAScript 5th Edition Specification, the syntax is supported by most modern browsers (including IE9).
How can I add a key/value pair to a JavaScript object?
There are two ways to add new properties to an object: var obj = { key1: value1, key2: value2 }; Using dot notation: obj.key3 = “value3”; Using square bracket notation: obj[“key3”] = “value3”; The first form is used when you know the name of the property. The second form is used when the name of … Read more