Edit in JSFiddle

var myString= "A word character is 0123456789, ABCDEFGHIGKLMNOPQRSTUVWXYZ, abcdefghijklmnopqrstuvwxyz, and _";

var execArray = /([dD])([eE])/g.exec(myString);

console.log(execArray[0]); //logs ["DE"]

console.log(execArray.index); //logs 35

console.log(execArray.input);
/* logs
A word character is 0123456789, ABCDEFGHIGKLMNOPQRSTUVWXYZ, abcdefghijklmnopqrstuvwxyz, and _
*/