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javascript random ad code (image ad)_advertising code

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Release： 2016-05-16 18:47:36
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There is a good one in this Random function code, I don’t understand the details. Friends who know can reply.
Copy code
The code is as follows:


function rnd() {
var ia=9301 ;
var ic=49297;
var im=233280;
sec = (sec*ia ic) % im;
return sec/(im*1.0);
};
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