JSFiddle - React, Tailwind, and code Playground

HTML

<img src="data:image/gif;base64,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" id="foo" />
<select id="choix">
  <option value="srfleur">fleur</option>
  <option value="srcool">cool</option>
</select>

JavaScript

var ico= [];
ico["srfleur"] = new Image();
ico["srfleur"].src = "data:image/gif;base64,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";
ico["srcool"] = new Image();
ico["srcool"].src = "data:image/gif;base64,R0lGODlhDwAPALMNAP/qAEVFRQAAAP/OAP/JAP6dAP+0AP/+k//9E///x//////lAP//6wAAAAAAAAAAACH5BAEAAA0ALAAAAAAPAA8AAARZsEkZap24VZbOGRcWcAgCnEMRTEFnnnC6ascLx2sr7DvA76rAgacQ+HZFQ+VwNJ54BGXAdoNFK4PqbUFQabJOmIAAogwGi99YxjoT3m+2KGCoG4IZlmU2iQAAOw==";

$( function(){
$('#choix').on('click', function(){
	monsrc=$(this).val();
	$('#foo').attr("src", ico[monsrc].src );

});
})