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X Index

Animation

xAniLine, xAnimation.arc, xAnimation.corner, xAnimation.css, xAnimation.imgSize, xAnimation.line, xAnimation.opacity, xAnimation.para, xAnimation.rgb, xAnimation.rgbByClass, xAnimation.scroll, xAnimation.size, xAnimation, xAniOpacity, xAniRgb, xAniWH, xAniXY, xEllipse, xParaEq, xSequence, xSlideCornerTo, xSlideTo, xWinScrollTo.

DOM

xFirstChild, xGetElementById, xGetElementsByAttribute, xGetElementsByClassName, xGetElementsByTagName, xLoadLink, xLoadScript, xNextSib, xParent, xParentN, xPrevSib, xSmartLoad, xSmartLoad2, xSmartLoadScript.

Debug

xConsole, xEditable, xName, xParentChain, xSetIETitle.

Event

xAddEventListener, xDisableDrag, xDisableDrop, xEnableDrag, xEnableDrag2, xEnableDrop, xEvent, xHttpRequest, xPreventDefault, xRemoveEventListener, xStopPropagation.

Image

xImgAsyncWait, xImgRollSetup, xTriStateImage.

Iteration

xEach, xEachE, xEachN, xEachUntilReturn, xTimes, xWalkToFirst, xWalkToLast, xWalkTree, xWalkTree2, xWalkTree3, xWalkTreeRev, xWalkUL.

Misc

xCookie, xDef, xDeg, xGetURLArguments, xLibrary, xLinearScale, xNum, xRad, xRound, xStr.

Position

xCardinalPosition, xCen, xCenter, xGetEleAtPoint, xHasPoint, xIntersection, xLeft, xMoveTo, xOffset, xPageX, xPageY, xScrollLeft, xScrollTop, xTop.

Size

xClip, xColEqualizer, xDocSize, xHeight, xResizeTo, xWidth.

String

xCamelize, xCapitalize, xHex, xPad, xParseColor, xRgbToHex, xStrEndsWith, xStrReplaceEnd, xStrStartsWith, xTrim.

Style

xAddClass, xDisplay, xFindAfterByClassName, xFindBeforeByClassName, xGetComputedStyle, xGetCSSRules, xGetStyleSheetFromLink, xHasClass, xHasStyleSelector, xHasStyleSheets, xInsertRule, xOpacity, xRemoveClass, xStyle, xTagStyle, xToggleClass, xTraverseDocumentStyleSheets, xTraverseStyleSheet.

Table

xTable, xTableCellVisibility, xTableColDisplay, xTableCursor, xTableCursor2, xTableHeaderFixed, xTableIterate, xTableRowDisplay, xTableSync.

UI

xBar, xCollapsible, xDialog, xFenster, xFenster2, xMenu1, xMenu1A, xMenu1B, xMenu5, xMenu6, xModalDialog, xPopup, xSelect, xSplitter, xTabPanelGroup, xTextArea, xTooltipGroup.

Window

xClientHeight, xClientWidth, xWinClass, xWindow, xWinOpen.

xGetElementsByTagName

Description

Returns an array of elements which are descendants of parent and have tagName. If parent is null or not present, document will be used. If tagName is null or not present, "*" will be used.

Syntax

xGetElementsByTagName(tagName[, parent])

Parameters

tagNamestring
parentID string or element reference

Return

a, possibly empty, node list

Source

Default.

// xGetElementsByTagName r5, Copyright 2002-2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL
function xGetElementsByTagName(t,p)
{
  var list = null;
  t = t || '*';
  p = xGetElementById(p) || document;
  if (typeof p.getElementsByTagName != 'undefined') { // DOM1
    list = p.getElementsByTagName(t);
    if (t=='*' && (!list || !list.length)) list = p.all; // IE5 '*' bug
  }
  else { // IE4 object model
    if (t=='*') list = p.all;
    else if (p.all && p.all.tags) list = p.all.tags(t);
  }
  return list || [];
}

Dependencies

xGetElementById

Demos

toys - Index of all X demos.

Notes

19Oct06 I'm now using the new function as this symbol's src. The original function was as follows: 
function xGetElementsByTagName(t,p)
{
  var list = null;
  t = t || '*';
  p = p || document;
  if (xIE4 || xIE5) {
    if (t == '*') list = p.all;
    else list = p.all.tags(t);
  }
  else if (p.getElementsByTagName) list = p.getElementsByTagName(t);
  return list || new Array();
}
2May05 After a discussion with Hallvord on the Opera libraries list on how to eliminate the browser sniff... I really like the change - but I don't like the code-size increase (about 50 bytes). I realize that my additions contributed to the size increase - but I felt they were needed to maintain the semantics of the original function. Perhaps they could be optimized. My change to your expression: (t=='*' && list.length == 0) to this: (t=='*' && (!list || !list.length)) is perhaps needless paranoia - I don't know So we reduced the browser sniff assumption to an assumption (or knowledge) about the effect of the bug - with this expression: (t=='*' && (!list || !list.length)). Excellent! And perhaps the increase of 50 bytes is worth it - knowing that I won't have to maintain a browser sniff for this function.
2002This even works with IE4. It also fixes the IE5 '*' bug.

Revisions

5: 8Aug07Use xGetElementById for parent parameter. Use [] instead of new Array().
4: 20Dec06In IE, typeof p.getElementsByTagName is 'unknown'.
3: 19Oct06See comment for 19Oct06.
2: 16Mar05Reduced 93 bytes
1: 31Mar04put in it's own file for use with XC

License

By your use of X and/or CBE and/or any Javascript from this site you consent to the GNU LGPL - please read it. If you have any questions about the license, read the FAQ and/or come to the forums.

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