vndb/mithril-vndb
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prevent null ref

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This commit is contained in:
Leo Horie 2014-05-26 21:59:41 -04:00
parent b9cdd940bc
commit 41d3ee2983
1 changed files with 2 additions and 4 deletions
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6
mithril.js
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@ -162,10 +162,7 @@ Mithril = m = new function app(window) {
return cachedAttrs return cachedAttrs
} }
function clear(nodes) { function clear(nodes) {
if (nodes.length > 0) { for (var i = nodes.length - 1; i > -1; i--) if (nodes[i]) nodes[i].parentNode.removeChild(nodes[i])
var parent = nodes[i].parentNode
for (var i = nodes.length - 1; i > -1; i--) parent.removeChild(nodes[i])
}
nodes.length = 0 nodes.length = 0
} }
function injectHTML(parentElement, index, data) { function injectHTML(parentElement, index, data) {
@ -209,6 +206,7 @@ Mithril = m = new function app(window) {
} }
var nodeCache = [], cellCache = {} var nodeCache = [], cellCache = {}
m.render = function(root, cell) { m.render = function(root, cell) {
if (!root) throw new Error("Please ensure the DOM element exists before rendering a template into it.")
var index = nodeCache.indexOf(root) var index = nodeCache.indexOf(root)
var id = index < 0 ? nodeCache.push(root) - 1 : index var id = index < 0 ? nodeCache.push(root) - 1 : index
var node = root == window.document || root == window.document.documentElement ? documentNode : root var node = root == window.document || root == window.document.documentElement ? documentNode : root