Javascript this object inside intervals/timeouts -

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i have method big setinterval statement, , needs access this object of object owns method inside interval. implemented simple closure, doesn't seem elegant:

connect: function(to, rate, callback){     var cthis = this,                             //set cthis this,     connectintervalid = setinterval(function(){         if(cthis.attemptconnect(to)){             //reference here,             clearinterval(connectintervalid)             cthis.startlistening(10)              //here,             callback && callback.apply(cthis, []) //and here         }     }, rate) }

you apply or call, if wanted use this instead of cthis

connect: function(to, rate, callback){     var cthis = this,     tempfunc = function(){         if(this.attemptconnect(to)){                              clearinterval(connectintervalid)             this.startlistening(10)                           callback && callback.apply(this, [])           }      }�             connectintervalid = setinterval(function(){tempfunc.apply(cthis, [])}, rate)  }

however, seems worse...

using .bind makes bit better (in opinion, may or may not agree):

support code:

function $a(args){    var out = [];    for(var i=0, l=args.length; i<l; i++){ out.push(args[i]); }    return out; }  function.prototype.bind = function() {    var __method = this, args = $a(arguments), object = args.shift();     return function() {       return __method.apply(object || this, args.concat( $a(arguments) ));    }; };

and code becomes:

connect: function(to, rate, callback){     connectintervalid = setinterval((function(){         if(this.attemptconnect(to)){             //reference here,             clearinterval(connectintervalid)             this.startlistening(10)              //here,             callback && callback.apply(this, []) //and here         }     }).bind(this), rate) }

but i'm afraid won't whole lot better.


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