CodingForums.com - View Single Post - Using AJAX to Check Database for Available Usernames

rnd me · 09-07-2012, 06:47 AM

this is always true:

Code:

if (usernameSpan.textContent !== undefined) {

if it is without text, it will be null or "", not undefined, and the "!==" means it's picky about those.

try hitting all 3 while saving keystrokes:

Code:

if (usernameSpan.textContent) {

09-07-2012, 06:47 AM	PM User \| #2
rnd me Senior Coder Join Date: Jun 2007 Location: Urbana Posts: 3,452 Thanks: 9 Thanked 466 Times in 450 Posts	this is always true: Code: if (usernameSpan.textContent !== undefined) { if it is without text, it will be null or "", not undefined, and the "!==" means it's picky about those. try hitting all 3 while saving keystrokes: Code: if (usernameSpan.textContent) { __________________ my site (updated 5/13) STATS (2013/5) HTML5:90.2% MOB:14% IE7:0.5% IE8:8.8% IE9:11.4% IE10:6.5% Last edited by rnd me; 09-07-2012 at 06:49 AM..