safe invokes a given function by wraping it in a try/catch, function must be a member of the supplied object. Useful in some contexts like analytic functions in unit tests.

attempt.js

function attempt(obj, p, fnFail){
    var fn = function(){};
    if (obj && typeof obj[p] === 'function'){
        fn = function(){
            try {
                return this[p].apply(this, [].slice.apply(arguments));
            }catch(e){
                return typeof fnFail === 'function' ? fnFail(e, p, obj) : console.error('attempt fail:', this['__id__'] || '', p, e);
            }
        }.bind(obj);
    }else{
      console.log('attempt warning not a function:', p);
    }
    return fn;
}