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jk195417/prototype.js

Last active October 7, 2019 03:23
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prototype.js
var A = function() {}
A.prototype.value = 'a'
var B = function() {}
B.prototype = new A()
B.prototype.value = 'b'
new B().value // return 'b'
@lagagain
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lagagain commented May 8, 2019 

var A = function() {}
A.prototype.value = 'a'
var a = new A()
var B = function() {}
B.prototype = A.prototype
B.prototype.value = 'b'

var b = new B()

a.value == b.value  // return true //wwwww

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