Stop for a second. Do you see this a lot in your code?:
if (typeof var1 === 'string' && var1.length > 0) {
// other code here...
}I see it all the time -- and in tons of places too. Or, my favorite:
if (typeof var2 === 'object' && var2 !== null) {
// but what if it's an empty object?
}How much smaller would our JavaScript files be if we didn't do this all the time? Well, lets collectively stop that. Lets use simple functions to do that for us! es6-javascript-validators is a collection of functions which will do all of this for you and keep your code consistent and clean.
- Bower:
bower install es6-javascript-validators - NPM:
npm install --save es6-javascript-validators
- isNullOrUndefined: Is it null or undefined?
- isStr: Is it a string?
- isArr: Is it an array?
- isNum: Is it a number?
- isObj: Is it an object?
- isFnc: Is it a function?
- validStr: Is it a string and not an empty one?
- validArr: Is it an array and not an empty one?
- validNum: Is it a number and greater than 0?
- validObj: Is it an object and not an empty one?
- ...Or, if you want all of them, just export the default object which contains all of the above.
import { isStr, isObj } from 'your/path/to/module.js';
console.log(isStr('')); // true
console.log(isStr([])); // false
console.log(isStr(null)); // false
console.log(isStr(0)); // false
console.log(isObj('')); // false
console.log(isObj([])); // false
console.log(isObj(null)); // false
console.log(isObj({})); // true