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javascript Programming Glossary: mutabledoes Backbone.Models this.get() copy an entire array or point to the same array in memory http://stackoverflow.com/questions/11661380/does-backbone-models-this-get-copy-an-entire-array-or-point-to-the-same-array the model's internal attributes . This works fine with immutable types such as numbers strings and booleans but runs into problems.. numbers strings and booleans but runs into problems with mutable types such as arrays you can easily change something without.. s. The basic lesson here is simple If you're going to use mutable types as attribute values _.clone them on the way out or use..
cartesian product of multiple arrays in javascript http://stackoverflow.com/questions/12303989/cartesian-product-of-multiple-arrays-in-javascript Here is a functional solution to the problem without any mutable variable using reduce and flatten provided by underscore.js..
What is document in JavaScript and what is its scope? http://stackoverflow.com/questions/13860898/what-is-document-in-javascript-and-what-is-its-scope you prefer the global variable called document is itself immutable and its value cannot be changed by JavaScript. The value however..
http://stackoverflow.com/questions/15777519/using-window-document-and-undefined-as-arguments-in-anonymous-function-th as the undefined global variable in ECMAScript 3 and is mutable i.e. it can be changed by someone else . undefined isn't really..
Javascript: Get access to local variable or variable in closure by its name [duplicate] http://stackoverflow.com/questions/2336508/javascript-get-access-to-local-variable-or-variable-in-closure-by-its-name way to do this like you want. Internally the variable is a mutable binding in the declarative environment records. Properties are..
http://stackoverflow.com/questions/3200211/what-does-immutable-mean does immutable mean If a string is immutable does that mean that.... let's.. does immutable mean If a string is immutable does that mean that.... let's assume JavaScript var str 'foo'.. but it won't change the initial string If the string was mutable does that mean the 2nd alert would return oo as well javascript..
Why does `typeof this` return “object”? http://stackoverflow.com/questions/4390658/why-does-typeof-this-return-object js primitives string number boolean null undefined are immutable so a function can not be attached to them. Therefore the call.. Works var test string wrap test up to give it a mutable wrapper var temp Object test temp.someFun function alert this..
What advantages does using (function(window, document, undefined) { … })(window, document) confer? http://stackoverflow.com/questions/5020479/what-advantages-does-using-functionwindow-document-undefined-windo because the undefined global property in ECMAScript 3 is mutable meaning that someone could change its value affecting your code.. its value affecting your code for example undefined true mutable function undefined alert typeof undefined undefined the local..
What is the most efficient way to concatenate N arrays in JavaScript? http://stackoverflow.com/questions/5080028/what-is-the-most-efficient-way-to-concatenate-n-arrays-in-javascript N arrays of objects in JavaScript The arrays are mutable and the result can be stored in one of the input arrays. javascript..
Are JavaScript strings immutable? Do I need a “string builder” in JavaScript? http://stackoverflow.com/questions/51185/are-javascript-strings-immutable-do-i-need-a-string-builder-in-javascript JavaScript strings immutable Do I need a &ldquo string builder&rdquo in JavaScript Does.. string builder&rdquo in JavaScript Does javascript use immutable or mutable strings Do I need a string builder javascript string.. in JavaScript Does javascript use immutable or mutable strings Do I need a string builder javascript string share..
How to set the prototype of a JavaScript object that has already been instantiated? http://stackoverflow.com/questions/7015693/how-to-set-the-prototype-of-a-javascript-object-that-has-already-been-instantiat a hard and unsolved problem. Everything in Javascript is mutable except a. the syntax b. host objects the DOM exists outside..
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