How to use responseText in ajax

()"update_result").innerhtml=;

updatedb").disabled=true;

else{"update_result").innerhtml="

Updating ......";

get", url, true);

Another page; "Update Success! ");The value of is Update Successful

This is the data that your daemon returns, and whatever is returned. Just traverse it in the background, and then output it as a string is this responsetext

This can be: var gtext=;

if("The string to be judged")!=-1)

xml. You can iterate over the values, extract them, and compare them with the values in your text box in an if statement.

It is recommended to use JSON to transfer it to be simpler.

var r="()"

data = eval(r)

The outermost one"("with")"Be sure to add, this is the most common error in json.

The most popular flavor is the chilled drunken bean curd.

Kindness. Downstairs is right. You can use alert(

At the same time, you can also return just an ok to indicate that the username exists. Remember not to show up with superfluous things.

The problem may not come out on the space here. Under normal circumstances, I would not use Chinese characters to mark success. Because kanji can sometimes make mistakes. You can output the responsetext first to see what it is...

You are in front of alert(

If I'm not mistaken, the one returned has a space.

The jQuery exacerbation faction handles the xmlhttprequest of js, and directly passes the method back to you, which is the success function. Therefore, the success method is not really an ajax ** function, but it is just called in the response function, so there is no response parameter in the success method.

The result is just a string, not a collection. If you want to get more data, you can use it. The premise is that you write all the data into an XML file. After this xml, you can parse the xml.

If you don't use a framework, then build your own json object, and then you can use it directly in the client server, which is much easier than the operation.

You can use json to return a string, and use the js eval method to parse it directly as an object.

dwr is also available, it is to be configured, and it feels troublesome.