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[fix] don't fail in old browsers #3

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[fix] don't fail in old browsers #3

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75 changes: 39 additions & 36 deletions lib/index.js
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Original file line number Diff line number Diff line change
@@ -1,49 +1,52 @@
var doc = document
, elementProto = HTMLElement.prototype
, nodeProto = Node.prototype
, win = window
, elementProto = win.HTMLElement && HTMLElement.prototype
, nodeProto = win.Node && Node.prototype

// Add support for Node.contains for Firefox < 9
if (!doc.contains) {
if (!doc.contains && nodeProto) {
nodeProto.contains = function(node) {
return !!(this.compareDocumentPosition(node) & 16)
}
}

// Add support for insertAdjacentHTML for Firefox < 8
// Based on insertAdjacentHTML.js by Eli Grey, http://eligrey.com
if (!doc.body.insertAdjacentHTML) {
elementProto.insertAdjacentHTML = function(position, html) {
var position = position.toLowerCase()
, ref = this
, parent = ref.parentNode
, container = doc.createElement(parent.tagName)
, firstChild, nextSibling, node
if (elementProto){
// Add support for insertAdjacentHTML for Firefox < 8
// Based on insertAdjacentHTML.js by Eli Grey, http://eligrey.com
if (!doc.body.insertAdjacentHTML) {
elementProto.insertAdjacentHTML = function(position, html) {
var position = position.toLowerCase()
, ref = this
, parent = ref.parentNode
, container = doc.createElement(parent.tagName)
, firstChild, nextSibling, node

container.innerHTML = html
if (position === 'beforeend') {
while (node = container.firstChild) {
ref.appendChild(node)
}
} else if (position === 'beforebegin') {
while (node = container.firstChild) {
parent.insertBefore(node, ref)
}
} else if (position === 'afterend') {
nextSibling = ref.nextSibling
while (node = container.lastChild) {
nextSibling = parent.insertBefore(node, nextSibling)
}
} else if (position === 'afterbegin') {
firstChild = ref.firstChild
while (node = container.lastChild) {
firstChild = ref.insertBefore(node, firstChild)
container.innerHTML = html
if (position === 'beforeend') {
while (node = container.firstChild) {
ref.appendChild(node)
}
} else if (position === 'beforebegin') {
while (node = container.firstChild) {
parent.insertBefore(node, ref)
}
} else if (position === 'afterend') {
nextSibling = ref.nextSibling
while (node = container.lastChild) {
nextSibling = parent.insertBefore(node, nextSibling)
}
} else if (position === 'afterbegin') {
firstChild = ref.firstChild
while (node = container.lastChild) {
firstChild = ref.insertBefore(node, firstChild)
}
}
}
}
}

elementProto.matches =
elementProto.webkitMatchesSelector ||
elementProto.mozMatchesSelector ||
elementProto.oMatchesSelector ||
elementProto.msMatchesSelector
elementProto.matches =
elementProto.webkitMatchesSelector ||
elementProto.mozMatchesSelector ||
elementProto.oMatchesSelector ||
elementProto.msMatchesSelector
}