10.2.1.1.4 GetBindingValue

2010-05-06

mixed GetBindingValue(N:String, S:Boolean) throws TypeError

Return the value for Binding N. S denotes strict mode and throws an error if something fails. The binding N must already exist.

In these examples, a Binding is an object {value:mixed, mutable:Boolean, deletable:Boolean, initialized:Boolean}

Code: (Meta Ecma)
function GetBindingValue(N, V, S){
var envRec = this;
if (!(N in envRec)) return; // "assert envRec does not already have a binding for N"
if (envRec[N].mutable || envRec[N].initialized) return envRec[N].value; // if not uninitialized immutable binding
else if (S) throw TypeError;
};