javascript - Faster to append or create html elements before? -- JQuery -


i trying make application faster. want elements appear when ajax request has succeeded. faster create elements append when request has succeeded, or faster create html element in actual html , insert content in element .html?

according jsperf: plain old innerhtml beats .html() (and .html() beats .append()).

however according jsperf: dom beats innerhtml.

so, might want documentfragment, specified in dom1 , supported in ie6 (so there no reason not use it).

since document fragment in memory , not part of main dom tree, appending children not cause page 'reflow' (computation of element's position , geometry). consequently, using document fragments results in better performance.

john resig did nice write-up here , concludes:

a method largely ignored in modern web development can provide serious (2-3x) performance improvements dom manipulation.

you might want combine of techniques per case want optimize.

hope helps!


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