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perf(select): Execute render after $digest cycle#8825
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This is an optimization to defer execution of the render function in the select directive after the $digest cycle completes inside the $watchCollection expressions. This does a check to see if the render function is already registered in the $$postDigestQueue before it passes it into $$postDigest, guaranteeing that the DOM manipulation happens only in one execution after the model settles.
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instead of doing indexOf you could just have a internal boolean flag renderScheduled and set it to true when you schedule via postDigest and in postDigest reset it to false.
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this should be the first thing in the render method in case an exception is thrown in the body
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thanks |
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This is an optimization to defer execution of the render function in the
select directive after the $digest cycle completes inside the
$watchCollection expressions. This does a check to see if the render
function is already registered in the $$postDigestQueue before it passes
it into $$postDigest, guaranteeing that the DOM manipulation happens
only in one execution after the model settles.