Style minWidth Property

Set the minimum width of a <div> element:

document.getElementById("myDIV").style.minWidth = "400px";

Description

The minWidth property sets or returns the minimum width of an element.

The minWidth property has effect only on block-level elements or on elements with absolute or fixed position.

Tip: To set or return the maximum width of an element, use the maxWidth property.

Property
minWidth	Yes	Yes	Yes	Yes	Yes

Return the minWidth property:

object.style.minWidth

Set the minWidth property:

object.style.minWidth = "length|%|initial|inherit"

Value	Description
length	Defines the minimum width in length units. Default is 0
%	Defines the minimum width in % of the parent element
initial	Sets this property to its default value. Read about initial
inherit	Inherits this property from its parent element. Read about inherit

Default Value:	0
Return Value:	A String, representing the minimum width of an element
CSS Version	CSS2

Return the minimum width of a <p> element:

alert(document.getElementById("myP").style.minWidth);

CSS tutorial: CSS Dimension