js select option set value code example
Example 1: javascript set html select value
// Get the html select element
var select = document.getElementById('<your select element id>');
// If you have a <option> like this:
// <option value="1">My Value Display text</option>
//Then your selected value of your select would be:
select.value = "1";
Example 2: javascript set select option
document.getElementById("mySelectID").value="my_value";
//note: setting value in html directly does not work <select value="my_value">