I have been working on a project and developing a JavaScript framework. The original code is about 700 lines so I only pasted this line. The includes method doesn't work on Internet Explorer. Is there any solution for this?  var row_cells = tbl_r...
Given   var arr = [1,2,true,4,{"abc":123},6,7,{"def":456},9,[10]]   we can filter number items within array arr using Number constructor  var res = arr.filter(Number); // [1, 2, true, 4, 6, 7, 9, Array[1]]   are true and [10] expected...
I'm using babeljs with es7 style async/await methods.  I have a main script that will call a async method on an array of objects that all return promises.  I use Promise.all() to wait for all of those to return, however, these tasks could take a...
I've just discovered the ECMAScript 7 feature a**b as an alternative for Math.pow(a,b) (MDN Reference) and came across a discussion in that post, in which they apparently behave differently. I've tested it in Chrome 55 and can confirm that th...
There are already a lot of cool features in ES6/ES7 for defining Javascript objects. However, the following pattern is common in Javascript:  const obj = {    requiredKey1: ...,    requiredKey2: ...  };  if (someCondition) {    obj.optionalKey1 = ......
I'm trying to use javascript ES7 syntax on the server using node.js with webpack and babel-loader (es2015 + stage-0 presets). I've gotten it to work with babel-node but when I run webpack I get the following error at the async keyword (9:22 i...
There is _.merge functionality in lodash. I want to achieve the same thing in ES6 or ES7.  Having this snippet:  Object.assign({}, {key: 2}, {key: undefined})   I want to receive {key: 2}. Currently I receive {key: undefined}  This is NOT a deep merg...
VS Code does not recognize the ES7 bind syntax out of the box. Instead, it shows up as a syntax error:  Example of highlighted error in code  [ts] Declaration or statement expected.    I've searched around to see if there's an extension that...
I'm having a bit of a brainfart. Is there a shorthand for this in ES6/ES7?  res.locals.hello = hello  I've tried a few different combinations but can't get anything to stick....

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