how to use object value as object name in javascript?

Question

how can i use the object value as object name

like this

$.each(columns, function(index, value) {
    var objectName = value.object; // need to pass this 
    to the next $.each
    //lets say i'm expecting objectName = x 
    $.each(values, function(i, v) {
        // console.log(v.x) ; // this works fine 
        console.log(v.objectName);
    });
});​

i have tried toString() it didn't work Thanks

Answer 1

use square-bracket notation when using variables (identifiers) instead of actual object properties

console.log(v[objectName])

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For futher reference on subject : http://www.jibbering.com/faq/faq_notes/square_brackets.html

String Variables as Identifiers
The string used within the square brackets does not need to be a string literal. It can be any expression that results in a string. This is where the square bracket notation becomes most useful as the expression could be a reference to a string variable that holds the property name as its value, or a function call that returns a string, or an expression that concatenates two strings, or any combination of these [...]