Uncaught DOMException: Failed to execute 'add' on 'DOMTokenList': The token provided ('todo completed') contains HTML space characters, which are not valid in tokens. at HTMLDocument.getTodosFromLocalStorage code example

Example 1: MatDatepicker: No provider found for DateAdapter. You must import one of the following modules at your application root: MatNativeDateModule, MatMomentDateModule, or provide a custom implementation

import {MatNativeDateModule} from '@angular/material';

Example 2: javascript check if is array

var colors=["red","green","blue"];

if(Array.isArray(colors)){
    //colors is an array
}

Example 3: Error: No available formula with the name "mongodb"

/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"