JavaScript JS scope convention for third (and greater) nested scopes

If you need to keep scope in a nested function, it is convention to make a variable that that is the the this like so: var that = this; and reference that in the nested function. What is the convention name for the 3rd degree and beyond?

I have also come across a few situations where proxy is used, but have never had to pass nested proxy in JQuery. Is there anything special for nested proxys

Regular scope issue came up in backbone, with a potential (we are still working through it) to have to go another level down:

keyPressed: function(keyEvent) {
if(case1 && case2 && case3) {
  if(anotherCase) {
    .....
  }
  else if(yetAnotherCase) {
    ....
    var that = this;
    window.waitIntervalID = window.setInterval(function() {
      if(that.waitCount == 2) {
        that.isWaiting = false;
        that.waitCount = 0;

        that.mainCounter = 0;
        that.isRecording = true;
        for(var i = 0; i < that.signature; i++) {
          that.beatArray[i] = 0;
        }
        window.tapIntervalID = window.setInterval(function() {
          that.count = that.mainCounter + 1;              
          that.mainCounterTime = new Date().getTime();
          that.mainCounter = (that.mainCounter + 1) % that.signature;
        }, that.average);
        that.isTapping = false;
        that.countIn = 1;
        var bpm = 1000 / that.average * 60;
        that.set('tempo', bpm);
        window.clearInterval(waitIntervalID);
      }
      that.waitCount++;
    }, this.average);
    this.countIn++;
  }
}
},

Proxy scope :

    // add click handler to this beat
    $('#beat'+this.model.cid).click($.proxy(this.toggle, this));
    return this;
Answer:1

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