Few JavaScript tips which are handy
1. Filter only strings from an array
let arr = [‘one’, ‘two’, {a: 10}];
arr.filter(i => typeof i === ‘string‘) // [‘one‘, ‘two‘]
2. Optional chaining
Easier way to remember optional chaining is that the ‘?’ works on the prefix
obj?.func?.() // checks/evaluates function ‘func‘ and object ‘obj‘ exists
3. Null coalescing operator
Checks the left hand value and if its null or undefined, returns the right hand value
const a = null ?? ‘default value‘;
console.log(a); // ‘default value‘
That is it for part 1. Stay tuned.