Coffeescript to ES6 Cheatsheet

References:

Iteration

  • On object properties:
// coffee
for prop, value of obj

// ES6
_.each(obj, (value, key)=>{
});

// or (NOTE don't use it for array)
for (let prop in obj) {
}
  • On collection (array):
// coffee
for ele in arr
    console.log ele

// es6
for (let ele of arr) {
    console.log(ele);
}

// or
arr.forEach( (ele) => {
    console.log(ele);
    //  函数体内的this对象,就是定义时所在的对象,而不是使用时所在的对象
});

// or
arr.forEach(function(ele){
    console.log(ele);
    //  this is the function
});

Misc

// coffee
class MyFile
    @EXT = '.myfile'

// es6
class MyFile {
  static Ext() {
    return '.myfile';
  }
}

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