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Other References

CSSStyleDeclaration JS Conversion


Input Text value Property

❮ Input Text Object

Example

Change the value of a text field:

document.getElementById("myText").value = "Johnny Bravo";
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Definition and Usage

The value property sets or returns the value of the value attribute of a text field.

The value property contains the default value OR the value a user types in (or a value set by a script).


Browser Support

Property
value Yes Yes Yes Yes Yes

Syntax

Return the value property:

textObject.value

Set the value property:

textObject.value = text

Property Values

Value Description
text Specifies the value of the input text field


Technical Details

Return Value: A String, representing the value of the text field

More Examples

Example

Get the value of a text field:

var x = document.getElementById("myText").value;
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Example

Form validation:

var at = document.getElementById("email").value.indexOf("@");
var age = document.getElementById("age").value;
var fname = document.getElementById("fname").value;
submitOK = "true";

if (fname.length > 10) {
  alert("The name may have no more than 10 characters");
  submitOK = "false";
}

if (isNaN(age) || age < 1 || age > 100) {
  alert("The age must be a number between 1 and 100");
  submitOK = "false";
}

if (at == -1) {
  alert("Not a valid e-mail!");
  submitOK = "false";
}

if (submitOK == "false") {
  return false;
}
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Example

Dropdown list in a form:

var mylist = document.getElementById("myList");
document.getElementById("favorite").value = mylist.options[mylist.selectedIndex].text;
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Example

Another dropdown list:

var no = document.getElementById("no");
var option = no.options[no.selectedIndex].text;
var txt = document.getElementById("result").value;
txt = txt + option;
document.getElementById("result").value = txt;
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Example

An example that shows the difference between the defaultValue and value property:

var x = document.getElementById("myText");
var defaultVal = x.defaultValue;
var currentVal = x.value;
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Related Pages

HTML reference: HTML <input> value attribute


❮ Input Text Object