Advanced Search

detect any type of empty var in JS

/ Published in: JavaScript
Save to your folder(s)

Expand | Embed | Plain Text

Copy this code and paste it in your HTML 
  1. function empty(a) {
  2. 	if (a === "" || a === 0 || a === null || a === 'null' || a === 'undefined' || a === !1 || typeof a === "undefined") return !0;
  3. 	if (typeof a === "object") if (a instanceof Array) return a.length === 0;
  4. 	else {
  5. 		for (var b in a) return !1;
  6. 		return !0
  7. 	}
  8. 	if (typeof a === "string") return a.length === 0
  9. }
  10.  
  11. //it detects any type of empty var in JS like array, object, string, number etc..

Report this snippet


Comments

RSS Icon Subscribe to comments

You need to login to post a comment.