Is this correct (JavaScript prototype property)? -

here created function used constructor other clones. aside properties arguments, caller, length, name, __proto__(link function.protoype) created, prototype property created. property points object assigned prototype instances created when function invoked when using new keyword.

function clonetrooper(id, rank, yearsofservice, type){ if (!(this instanceof clonetrooper)){     return new clonetrooper(id, rank, yearsofservice, type); } this.id = id; this.rank = rank; this.yearsofservice = yearsofservice; this.type = type; }  

so when this:

clonetrooper.prototype.hasutilitybelt = true; clonetrooper.prototype.haslightsaber = false; 

i adding properties on clonetrooper prototype property. 1 one.

but if this afterwards:

clonetrooper.prototype = {     name: null     hasdroid: null  }; 

i have overwritten link clonetrooper's constructor replacing new object links object.prototype.

so question is, last syntax indeed overwriting prototype property?

so 1 should plan out object avoid occurrence.

yes, must careful. in cases should extend existing prototype 1 of 2 ways:

clonetrooper.prototype.foo = ... 

or (e.g. using jquery)

$.extend(clonetrooper.prototype, {     bar: ...,     baz: ... })