Looping For Option

html-option-loop

<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
<option value="5">5</option>

var select = document.getElementById("demo");  

var i=0;
 for(i=1;i<=5;i++){  
     select.options[select.options.length] = new Option(i,i);  

}