javascript - JS load image on click only -

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i need function in js load image on click only. use api , if load captcha image every page load after few requests bans me because not visitors enter captcha.

o have http://site.tld/?captcha_image=3382894 wich if load every time page loads got banned flood.

so need when visitor uses api let's appears text "click here enter captcha", when clicks image loaded.

i don't know js @ all, appreciate help... thanks!

$("button").click(function () {      var imgurl = $(this).data('rel');      $("#area").html("<img src='" + imgurl + "' alt='description' />");  });
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>  <button data-rel="http://www.lemis.com/grog/photos/20110726/big/capcha.gif">click</button>  <div id="area"></div>

reference link


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