Course tips and study guides

Study plans, exam and interview preparation, projects and placements, from people a year or two ahead and the UniCircle team. Every tip names its author and is checked by an editor before it appears.

Topics#javascript #html #java #sql #react #accessibility #dsa #interview #nodejs #arrays #error handling #forms #oop #placements #postgresql #abstract classes #acid #aggregates

2 tips tagged #javascript

TipEngineeringUndergraduateThe this keyword in JavaScript, explained with four rulesHow this is decided at call time, why arrow functions behave differently, and how to fix the lost-this bug in callbacks.#javascript#this#arrow functions#bindUniCircle team1 min
TipEngineeringUndergraduate== versus === and truthy values in JavaScriptWhy loose equality surprises people, the short list of falsy values, and safe ways to check for missing values with ?? and ?.#javascript#equality#truthy#nullishUniCircle team1 min

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