check if javascript var is equal to string

Question

I have a php page the verifies the username users type in, and echo's back "available!" if its available into a div called "feedback". now I have this JavaScript that I want to check to see if the "feedback" div says "available! and echo "username good" into the "check" div if it is. but it doesn't work and i don't know why.

<script type='text/javascript'>

		
	function check_info(){
	var username_good = document.getElementById('feedback').value;
	
	
	if(username_good == "available!"){
    document.getElementById("check").innerHTML = "username good";
	}
	else{
	 document.getElementById("check").innerHTML = "bad";	

	}
	}
</script>

Why are you doing one of those echoes server-side and one client-side? Why not just echo "username good" in the same place that you're echoing "available"? — Sam Hanley
– Sam Hanley, Commented Nov 14, 2014 at 3:59

Brennan · Accepted Answer · 2014-11-14 03:56:18Z

1

A div doesn't have a value property, you need to use innerHTML:

var username_good = document.getElementById('feedback').innerHTML;

answered Nov 14, 2014 at 3:56

Brennan

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Sameera Thilakasiri · Accepted Answer · 2014-11-14 04:02:18Z

0

Fiddle for the same added.

<div id="feedback">test</div>
<div id="check"></div>

<input type="button" onclick="javascript:check_info()" value="Validate">

function check_info(){
    var username_good = document.getElementById('feedback').innerHTML;
    if(username_good !== ""){
       document.getElementById("check").innerHTML = "username good";
    }
    else{
        document.getElementById("check").innerHTML = "bad"; 

    }
}

answered Nov 14, 2014 at 4:02

Sameera Thilakasiri

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