What is the type of user input in a textfield?

Question

Suppose you have a text field created in HTML. And you retrieve the user input through java script. What is the type when you retrieve the data? Is it automatically a string?

<input type="text" id="input">

document.form.name.value; // what is the type of this?

That would always be a `string` unless you convert it. – haim770 Jul 22 '15 at 19:57 — haim770, Jul 22 '15 at 19:57
What else do you suppose it could be? – Barmar Jul 22 '15 at 20:01 — Barmar, Jul 22 '15 at 20:01
this can be `undefined` also :) – vp_arth Jul 22 '15 at 20:21 — vp_arth, Jul 22 '15 at 20:21

score 1 · Accepted Answer · edited May 23 '17 at 12:14

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If you input type is going to be <input type="text" ... then it is a string. You can check or refer here: JavaScript: how to get value of text input field? for more info.

edited May 23 '17 at 12:14

Community

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answered Jul 22 '15 at 20:22

buggytuf

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score 0 · Answer 2 · answered Jul 22 '15 at 20:17

It is always a string unless you convert it as haim770 and Andrew Ashton said. Think about it this way, if you were to assign a value to the input inside the html file it would like this value='whatever value' and as you can see the data is inside quotation marks which makes it a string. This is essentially what .value is retrieving.

score 0 · Answer 3 · answered Jul 22 '15 at 20:26

Html Dom Input text value returns returns a string that represent the value of a text field. Javascript is a loosely typed language which means you do not declare the data types of variables explicitly. Javascript performs the conversion automatically. so this means you can use the data received almost any way you want. if the text field had a value of say value='10' this is a string "one and zero" but northing stops you from using that value - where an integer type is required from your code. Javascript converts data types based on context.

What is the type of user input in a textfield?

3 Answers3