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How to check if an array includes an objet in Jquery ?

How do i check if an array includes an object in Jquery ? Use something like this: function containsObject ( obj , list ) { var i ; for ( i = 0 ; i < list . length ; i ++) { if ( list [ i ] === obj ) { return true ; } } return false ; } In this case,  containsObject(car4, carBrands)  is true. Remove the  carBrands.push(car4);  call and it will return false instead. If you later expand to using objects to store these other car objects instead of using arrays, you could use something like this instead: function containsObject ( obj , list ) { var x ; for ( x in list ) { if ( list . hasOwnProperty ( x ) && list [ x ] === obj ) { return true ; } } return false ; } This approach will work for arrays too, but when used on arrays it will be a tad slower than the first option.
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How do I check if an array includes an object in JavaScript?

Similar thing: Finds the first element by a "search lambda": Array . prototype . find = function ( search_lambda ) { return this [ this . map ( search_lambda ). indexOf ( true )]; }; Usage: [ 1 , 3 , 4 , 5 , 8 , 3 , 5 ]. find ( function ( item ) { return item % 2 == 0 }) => 4 Same in coffeescript: Array . prototype . find = ( search_lambda ) -> @[ @map ( search_lambda ). indexOf ( true )] Current browsers have  Array#includes , which does  exactly  that,  is widely supported , and has a  polyfill  for older browsers. You can also use  Array#indexOf , which is less direct, but doesn't require Polyfills for out of date browsers. jQuery offers  $.inArray , which is functionally equivalent to  Array#indexOf . underscore.js , a JavaScript utility library, offers  _.contains(list, value) , alias  _.include(list, value) , both of which use  indexOf  internally if passed a JavaScript arra...
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How to start old power supplies from PC

A switch mode power supplies for free ! The old power supplies can be used for a lots of diy project. This is the best way for having a good power supplies already stabilised, with switch mode, for free. Difference behind switch mode power supplies & linear power supplies. Switch mode power supplies : A switching power supply is a power supply whose regulation is provided by an electrotechnical component used in switching (generally a transistor) and using a high-frequency transformer. Linear power supplies :  A filtered rectified power supply is a power supply in which the electrotechnical component is used in linear mode (equipped with a diode bridge + a capacitor) and uses a conventional transformer. So switch mode power supplies is used for will give a very precise current, while the other no. So for precision electronics, that's what we need. If I want to power my arduino card in 5V, that and perfect. J'ai sur mon alimentation des sortie 3v 5v...
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