Core Methods

Facilitates the setting or resetting of a named method in eCSStender.methods object so that it may be referenced by other functions or extensions.

eCSStender.applyWeightedStyle( el, { 'visibility': 'hidden' }, 10 );
// the element referenced by el now has visibility: hidden set
// with a specificity of 10
eCSStender.applyWeightedStyle( el, { 'visibility': 'visible' }, 1 );
// the visibility of el is not set to visible because 
// the specificity is not high enough
eCSStender.applyWeightedStyle( el, { 'visibility': 'visible' }, 10 );
// visibility is now set to “visible” because
// the specificity is equal to the prior specificity
eCSStender.applyWeightedStyle( el, { 'visibility': 'hidden' }, 100 );
// visibility is now set to “hidden” again because
// the specificity is greater than the prior specificity

This method can be invoked in order to turn off eCSStender's caching mechanism. It is usually called outside of an extension.

Embeds supplied CSS declaration blocks into the head of the current document and returns a reference to the style element used to do so. If the optional media argument is not supplied, the media of embedded stylesheet will be set to “all.” If the optional delay attribute is set to false (it's true by default), the styles will be written into the document immediately (instead of being delayed until eCSStender is finished writing).

This method allows you to tell eCSStender to ignore one (or several) CSS files. It accepts a string or an array of strings as an argument.

eCSStender.isSupported( 'property', 'visibility: hidden' ); // true
eCSStender.isSupported( 'property', 'foo: bar' ); // false

var el = document.createElement('b'),
html = document.createElement('p');
html.appendChild(el);
eCSStender.isSupported( 'selector', 'p b', html, el ); // true
eCSStender.isSupported( 'selector', 'p ?? b', html, el ); // false

This post-processing method can be used to reference the document’s styles from within an extension. It returns an array of JSON-formatted matches based on the lookup criteria you provide. The properties returned in each of those objects is determined by what properties you request. This method will be discussed in detail soon under the topic Consulting the Stylesheets.

Creates and returns a new style element. All three arguments are optional. By default, the id of the style element will be a randomly-generated number, prefaced by “temp-” and its media will be set to “all.” By default, the new style element will not be written into the document until eCSStender is finished running, but setting the optional third param to false will cause eCSStender to immediately write the style element into the page.

Adds the supplied function to the list of functions to be called when eCSStender finishes running.