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js example of getting the value and number of elements of a drop-down list_Basic knowledge

WBOY
WBOYOriginal
2016-05-16 16:49:441012browse

js gets the number of drop-down list box elements

Copy code The code is as follows:



<script><br>function getLength()<br>{<br>alert(document.getElementById("mySelect").length);//Number of elements<br>}<br></script>








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