javascript - Add random numbers to html -


i add iframe web everytime cache url best option me everytime make link 

http://example.com/ex.html?randomnumbers  http://example.com/ex.html?123o8173oy12389

so not cached how can add example math.random(); url try doesnt work

<iframe id='iframe2' src="http://example.com/ex.html?<script>math.random();</script>" frameborder="0" style="overflow: hidden; height: 100%;     width: 100%; position: absolute;"></iframe>

(i can not use php)

function geturl() {   return "http://example.com/ex.html?rnd=" + new date().gettime(); }

using

<iframe id='iframe2' src="javascript:top.geturl()" frameborder="0" style="overflow: hidden; height: 100%; width: 100%; position: absolute;"></iframe>

i cannot test here since blocks on same origin policy when testing


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