Code not running in IE 11, works fine in Chrome

Question

The following code can be run without a problem in Chrome, but throws the following error in Internet Explorer 11.

Object doesn\'t support property or

Answer 1

text.indexOf("newString") is the best method instead of startsWith.

Example:

var text = "Format";
if(text.indexOf("Format") == 0) {
    alert(text + " = Format");
} else {
    alert(text + " != Format");
}