Indicate a condition that must match for a template result to be used. If the condition is true, the corresponding action body is generated; otherwise the result is ignored and no content is generated.

For more information, see Where Elements.

ignorecase, multiple, negate, rel, subject, value


(example needed)


Type: boolean
Set to true to indicate that the case does not matter when making comparisons. Otherwise, the default value is false, to indicate that the value should match with the same case.
Type: boolean
Set to true to indicate that the value contains multiple values separated by commas. Any of the values may match. Otherwise, the entire value string is compared.
Type: boolean
Set to true to indicate that the comparison should be reversed. The where clause matches if the condition is false, and does not match if the condition is true.
Type: one of the values below
The type of comparison to perform.
The subject and value must match exactly.
The numeric value of the subject must be less than the value
The numeric value of the subject must be greater than the value
The string value of subject must come before value alphabetically
The string value of subject must come after value alphabetically
The value of subject must start with the value
The value of subject must end with the value
The value of subject must contain the value as a substring
Type: string
The variable or string to compare.
Type: string
The value to compare.

Inherited from XUL element
align, allowevents, allownegativeassertions, class, coalesceduplicatearcs, collapsed, container, containment, context, contextmenu, datasources, dir, empty, equalsize, flags, flex, height, hidden, id, insertafter, insertbefore, left, maxheight, maxwidth, menu, minheight, minwidth, mousethrough, observes, ordinal, orient, pack, persist, popup, position, preference-editable, querytype, ref, removeelement, sortDirection, sortResource, sortResource2, statustext, style, template, tooltip, tooltiptext, top, uri, wait-cursor, width


Inherited Properties
align, attributes, allowEvents, baseURI, boxObject, builder, childElementCount, childNodes, children, className, clientHeight, clientLeft, clientTop, clientWidth, collapsed, contextMenu, controllers, database, datasources, dir, firstChild, firstElementChild, flex, height, hidden, id, lastChild, lastElementChild, left, localName, maxHeight, maxWidth, menu, minHeight, minWidth, namespaceURI, nextElementSibling, nextSibling, nodeName, nodeType, nodeValue, observes, ordinal, orient, ownerDocument, pack, parentNode, persist, prefix, previousElementSibling, previousSibling, ref, resource, scrollHeight, scrollLeft, scrollTop, scrollWidth, statusText, style, tagName,textContent, tooltip, tooltipText, top, width


Inherited Methods
addEventListener(), appendChild(), blur, click, cloneNode(), compareDocumentPosition, dispatchEvent(), doCommand, focus, getAttribute(), getAttributeNode(), getAttributeNodeNS(), getAttributeNS(), getBoundingClientRect(), getClientRects(), getElementsByAttribute, getElementsByAttributeNS, getElementsByClassName(), getElementsByTagName(), getElementsByTagNameNS(), getFeature, getUserData, hasAttribute(), hasAttributeNS(), hasAttributes(), hasChildNodes(), insertBefore(), isDefaultNamespace(), isEqualNode, isSameNode, isSupported(), lookupNamespaceURI, lookupPrefix, normalize(), querySelector(), querySelectorAll(), removeAttribute(), removeAttributeNode(), removeAttributeNS(), removeChild(), removeEventListener(), replaceChild(), setAttribute(), setAttributeNode(), setAttributeNodeNS(), setAttributeNS(), setUserData

Document Tags and Contributors

 Contributors to this page: Sheppy, Marsf, Enn, Mossop
 Last updated by: Sheppy,