Tag: webpage scraping

Extract values from website dropdown list – using JavaScript




I was recently asked how to extract values from an HTML dropdown. Here’s the code an due credit.

Option 1 – only works with traditional ways dropdowns are defined.

var ddlArray= new Array();
var ddl = document.getElementById('PLACEHOLDER_NAME_OF_SELECT_FORM');
for (i = 0; i < ddl.options.length; i++) {
   ddlArray[i] = ddl.options[i].value;
   
   console.log(ddlArray[i]+',');
}

Option #2 – is more flexible when dropdowns are custom and don’t use the traditional select,option HTML elements.


var ddlArray= new Array();
var printValue="";

var ddl = document.querySelectorAll("#cars > option");
for (i = 0; i < ddl.length; i++) {
   printValue=printValue + ddl[i].innerText+',';
   
}
console.log(printValue);


<!--Example HTML to test out code -->

<select id="cars" name="carlist" form="carform">
  <option value="volvo">Volvo</option>
  <option value="saab">Saab</option>
  <option value="opel">Opel</option>
  <option value="audi">Audi</option>
</select>

Code from – https://stackoverflow.com/questions/6378680/get-all-the-values-of-a-dropdownlist-to-an-array-using-javascript