Fills out a template with provided variables The str argument is a template with variables in it. The second argument obj is an object with variables. w2utils.execTemplate("This is ${a} template ${string}, can't ${you} see?") // returns: "This is ${a} template ${string}, can't ${you} see?" w2utils.execTemplate("This is ${a} template ${string}, can't ${you} see?", {}) // returns: "This is a template string, can't you see?" w2utils.execTemplate("This is ${a} template ${string}, can't ${you} see?", { a: "one fancy", string: "StRiNg" }) // returns: "This is one fancy template StRiNg, can't you see?"