# Use web socket to transfer a String
**URL:** https://discourse.processing.org/t/use-web-socket-to-transfer-a-string/14642
**Category:** Libraries
**Created:** [October 13, 2019, 12:32am UTC](https://discourse.processing.org/t/use-web-socket-to-transfer-a-string/14642 "2019-10-13T00:32:48Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@zly1994411](https://discourse.processing.org/u/zly1994411)
#### Post date: [October 13, 2019, 12:32am UTC](https://discourse.processing.org/t/use-web-socket-to-transfer-a-string/14642/1 "2019-10-13T00:32:48Z")
Hey guys, I was trying to transfer a String from Node server to processing, the data do come in but when I do the conditional check, the msg == “8” returns false? Can anyone help me with this? Is there a datatype difference between java and js?
JS Code:
```auto
input.addEventListener("keydown",(event) =>{
if(event.which == 8){
socket.send("8");
}
});
```
In Processing:
```auto
//this will be executed whenever the server send a message;
void webSocketEvent(String msg){
println(msg); // print 8;
println(msg == "8"); //return false!!!
if(msg == "8"){
audienceTweet = audienceTweet.substring(0,audienceTweet.length()-1);
}else{
audienceTweet = audienceTweet + msg;
}
}
```
---
### Author:  [@kll](https://discourse.processing.org/u/kll)
#### Post date: [October 13, 2019, 12:40am UTC](https://discourse.processing.org/t/use-web-socket-to-transfer-a-string/14642/2 "2019-10-13T00:40:07Z")
might be that there is a different string as you think
try
[https://processing.org/reference/trim\_.html](https://processing.org/reference/trim_.html)
first
* * *
also string comparison must use
[https://processing.org/reference/String\_equals\_.html](https://processing.org/reference/String_equals_.html) not `==`
unless it is a character? then must use `== '8'`
not `.equals("8")` or ` == "8"`
---
### Author:  [@zly1994411](https://discourse.processing.org/u/zly1994411)
#### Post date: [October 13, 2019, 12:45am UTC](https://discourse.processing.org/t/use-web-socket-to-transfer-a-string/14642/3 "2019-10-13T00:45:32Z")
oops, I just figured it out, thanks; I used Js string comparison in java…