Using the value of a string variable as object parameter accessor

Question

I am attempting to dynamically access an object with a property value that is contained within a string. Example below:

var toolState = {
    draw_point: false;
    draw_line: false;
}

var dynamicText = "draw_point";

toolState.dynamicText = true; //here is the problem

I'm fairly new to JS. Sorry if this is a silly question.

Thanks

And [Dynamically access object property using variable](http://stackoverflow.com/q/4244896/218196) and probably [many more](http://stackoverflow.com/search?q=%5Bjavascript%5D+dynamic+property+variable) — Felix Kling, Sep 12 '14 at 15:34
I recommend to read [MDN - Working with Objects](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Working_with_Objects). — Felix Kling, Sep 12 '14 at 15:35

score 2 · Accepted Answer · answered Sep 12 '14 at 15:33

2

Use bracket notation instead of dot notation for variable names as properties.

toolState[dynamicText] = true;

answered Sep 12 '14 at 15:33

Sterling Archer

21,348
17
79
113

Using the value of a string variable as object parameter accessor

1 Answers1