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#398 - prevent unnecessary dom move operations

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This commit is contained in:
Leo Horie 2015-03-16 20:02:13 -04:00
parent 4f49d2bb8c
commit a61e15a2e3
1 changed files with 5 additions and 1 deletions
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6
mithril.js
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@ -137,6 +137,10 @@ var m = (function app(window, undefined) {
existing[cached[i].attrs.key] = {action: DELETION, index: i}
}
}
var guid = 0
for (var i = 0, len = data.length; i < len; i++) {
if (data[i] && data[i].attrs && data[i].attrs.key == null) data[i].attrs.key = "__mithril__" + guid++
}
if (shouldMaintainIdentities) {
if (data.indexOf(null) > -1) data = data.filter(function(x) {return x != null})
@ -212,7 +216,7 @@ var m = (function app(window, undefined) {
//fix offset of next element if item was a trusted string w/ more than one html element
//the first clause in the regexp matches elements
//the second clause (after the pipe) matches text nodes
subArrayCount += (item.match(/<[^\/]|\>\s*[^<]|&/g) || []).length
subArrayCount += (item.match(/<[^\/]|\>\s*[^<]/g) || [0]).length
}
else subArrayCount += type.call(item) === ARRAY ? item.length : 1;
cached[cacheCount++] = item