In Node.js, assignment of variables

Question

In app.js I have hard-coded 3 keywords:

var a = 'family';
var b ='friends';
var c ='teacher';

and saved them in an array called 'List'

var List = [a, b, c];

Now I passed this List in track (Twitter API)

twit.stream('statuses/filter', { track: List }, function(stream) {
    stream.on('data', function (data) {
        // code
    });
});

Now, I want to accept the user's keywords, so in index.html I am providing 3 textboxes (i.e. <input type="text">)

When the user enters the first keyword in textbox 1 it should be assigned to var a of app.js, when the 2nd keyword is inserted it should be assigned to var b, and so on.

<html>
<head>
</head>
<body>
    <form>
        Key 1<input id="Key_1" class="" name="" type="text" placeholder="First key" required /><br><br>
        Key 2<input id="Key_2" class="" name="" type="text" placeholder="Second key" required /><br><br>
        Key 3<input id="Key_3" class="" name="" type="text" placeholder="Third key" required /><br><br>

        <button type="submit" form="form1" value="Submit">Submit</button>
    </form>
</body>
</html>

How can I do this?

score 3 · Answer 1 · edited May 23 '17 at 11:52

You could do something similar from this question: How to get GET (query string) variables in Express.js on Node.js?

So when submitting the form, you could get the query parameters. But first, you'd need to give each input a name, lets say a, b and c:

<html>
<head>
</head>
<body>
<form method="post">

Key 1<input id="Key_1" class="" name="a" type="text" placeholder="First key" required /><br><br>
Key 2<input id="Key_2" class="" name="b" type="text" placeholder="Second key" required /><br><br>
Key 3<input id="Key_3" class="" name="c" type="text" placeholder="Third key" required /><br><br>

<button type="submit" form="form1" value="Submit">Submit</button>
</form>
</body>
</html>

Then you would need to make your HTML form post the data somewhere in your Node app and get the request values using this:

app.post('/post', function(req, res){
  a = req.query.a;
  b = req.query.b;
  c = req.query.c;
});

In Node.js, assignment of variables

1 Answers1