underscore.js Back

According to the official statement, Underscore is a JavaScript library that provides a whole mess of useful functional programming helpers without extending any built-in objects.

Here I will note what other people grasp from this library according to summaries of hanzichi's underscore-analysis.

• Use void 0 rather than undefined
• Common type inference and some useful tutorials
• Compatibility problems of for ... in
• The internal function: createAssigner()
• How to compare the equality of two elements
• Certain object functions like pick() and create()
• How to find items in an array
• How to get an array unique
• Flatten an array
• Certain array functions like compact(), difference(), and without()
• NaN?
• Array-like Objects
• How to shuffle an array
• Group