dojo.getComputedStyle¶
Returns a “computed style” object.
Introduction¶
dojo.getComputedStyle() is a companion function for dojo.style. It gets a “computed style” object which can be used to gather information about the current state of the rendered node.
Note that this may behave differently on different browsers. Values may have different formats and value encodings across browsers.
Note also that this method is expensive. Wherever possible, reuse the returned object.
Use the dojo.style() method for more consistent (pixelized) return values.
Since Dojo 1.7, dojo.getComputedStyle is exposed via the getComputedStyle method of the dojo/dom-style module. An alias is kept in dojo/_base/html for backward-compatibility.
Usage¶
// Dojo 1.7+ (AMD)
require(["dojo/dom-style"], function(domStyle){
domStyle.getComputedStyle(node);
});
// Dojo < 1.7
dojo.getComputedStyle(node);
- node
- A reference to a DOM node. Does NOT support taking an ID string for speed reasons.
Examples¶
Dojo 1.7+ (AMD)¶
When using AMD format in a fully baseless application, getComputedStyle is accessed from the dojo/dom-style module.
require(["dojo/dom-style", "dojo/dom"], function(domStyle, dom){
domStyle.getComputedStyle(dom.byId("foo")).borderWidth;
// Reusing the returned object, avoiding multiple lookups:
var cs = domStyle.getComputedStyle(dom.byId("someNode"));
var w = cs.width, h = cs.height;
});
Alternatively, you can load dojo base in AMD style and continue using dojo.getComputedStyle in the define or require callback:
require(["dojo"], function(dojo){
dojo.getComputedStyle(dojo.byId("foo")).borderWidth;
// Reusing the returned object, avoiding multiple lookups:
var cs = dojo.getComputedStyle(dojo.byId("someNode"));
var w = cs.width, h = cs.height;
});
Dojo < 1.7¶
dojo.getComputedStyle(dojo.byId("foo")).borderWidth;
// Reusing the returned object, avoiding multiple lookups:
var cs = dojo.getComputedStyle(dojo.byId("someNode"));
var w = cs.width, h = cs.height;