selectedOptions[0].textContent; not working in IE or Firefox

Question

function call(op) {
    var x = op.selectedOptions[0].textContent;
    var n = x.substring(0, 3);
    //alert(n);
    document.pts.inputbox.value = n;
    document.p         


        

Answer 1

Try this

function call(op) {
    var x = op.options[op.selectedIndex].text;
    var n = x.substring(0, 3);
    alert('Index : '+op.selectedIndex+' and first 3 lettrs are : '+n);
}

DEMO.

Answer 2

Based on a quick JSFiddle, the selectedOptions collection isn't widely supported yet.

Fails/Unsupported:

• IE10 (Desktop or Metro)
• IE11
• Safari 7
• iOS6 Opera Mini
• Android 4.0.4 Browser
• Android 4.0.4 Firefox Browser

Works:

• Chrome 23.0.1271.95
• Opera 12.11
• BlackBerry 10 Browser
• iOS6 Safari
• iOS6 Chrome
• Android 4.0.4 Opera Mobile Browser
• Firefox 53.0
• Edge