Remote call returning undefined. 1

[travisbrown]

I'm trying to return a string value from a remote call to a variable. I'm getting 'undefined' and I'm not sure why. Any ideas? The remote page is a simple text string that returns correctly when called up directly.

<script type="text/javascript">
function createRequestObject() {
	var ro;
	var browser = navigator.appName;
	if(browser == "Microsoft Internet Explorer"){
		ro = new ActiveXObject("Microsoft.XMLHTTP");
	}else{
		ro = new XMLHttpRequest();
	}
	return ro;
}

function getString(page) {
    var http = createRequestObject();
    http.open( 'get', page , true);
	http.onreadystatechange = function(){
         if ( http.readyState == 4 ) {
        var response = responseText;
        return response;
        http = null;
        }    
    };
    http.send(null);
}

function test() {
alert(getString('test.asp'));
};
</script>
<a href="javascript:test();">test</a>

 

[monksnake]

Try this:

if (http.readyState == 4 && http.status == 200) {
   var response = [!]http[/!].responseText;

I'm also wary about using http as a variable name.

<.

 

[travisbrown]

Humm...no. I get the same thing - undefined

Good point on the var name.

<script type="text/javascript">
function createRequestObject() {
	var ro;
	var browser = navigator.appName;
	if(browser == "Microsoft Internet Explorer"){
		ro = new ActiveXObject("Microsoft.XMLHTTP");
	}else{
		ro = new XMLHttpRequest();
	}
	return ro;
}

function getString(page) {
    var remote = createRequestObject();
    remote.open( 'get', page , true);
	remote.onreadystatechange = function(){
	if (remote.readyState == 4 && remote.status == 200) {
   		var response = remote.responseText;
        return response;
        remote = null;
        }    
    };
    remote.send(null);
}

function test() {
alert(getString('test.asp'));
};
</script>
<a href="javascript:test();">test</a>

I use this, which works quite well. I was trying to adapt the script above based on this.

function sndReq(page,target) {
    var http = createRequestObject();
    http.open( 'get', page , true);
    http.onreadystatechange = function(){
         if ( http.readyState == 4 ) {
        var response = http.responseText;
        document.getElementById(target).innerHTML = response;
        http=null;
        }    
    };
    http.send(null);
}

 

[monksnake]

I'll set this up and see what I get.

<.

 

[monksnake]

Here, I came up with something:

<script type="text/javascript">
[!]var response = new String();[/!]
function createRequestObject() {
    var ro;
    var browser = navigator.appName;
    if(browser == "Microsoft Internet Explorer"){
        ro = new ActiveXObject("Microsoft.XMLHTTP");
    }else{
        ro = new XMLHttpRequest();
    }
    return ro;
}

function getString(page) {
    var http = createRequestObject();
    http.open( 'get', page , true);
    http.onreadystatechange = function() {
         if ( http.readyState == 4 ) {
            [!]response = http.responseText;[/!]
            http = null;
        }    
    };
    http.send(null);
    [!]return response;[/!]
}

function test() {
alert(getString('test2.asp'));
};
</script>
<a href="javascript:test();">test</a>

Changes highlighted. I tested this and it worked.


<.

 

[travisbrown]

Excellent, as always.

Thank you.

 

[monksnake]

<.