How can I use string argument input as a variable name in javascript?

Question

How can I use string argument input as a part of variable name in a Javascript? I want to do that because it seems to be tedious to define getter and setter for all the fields... while most of the fields have similar names.

For example,

var random = {
    this.input1_field : null,
    this.input2_field : null,
    set: function(name,field){
       this.name_field = field;   
    }
}

where I want name_field to be dynamic based on the input variable 'name'. (ex, name="input1" or name="input2" etc)

Answer 1

this[name + "_field"] = field

You can just pass in a string and use it.

this["input1_field"] === this.input1_field