Microsoft Edge javascript toLocaleTimeString incorrect spacing -

i'm having trouble understanding going on javascript seems behave differently in edge. boiled down to:

var testi = new date().tolocaletimestring(); var len2 = testi.length; alert(len2); 

my length in edge 17, in chrome , ie it's 10 there seems phantom spaces in string, screwed attempting substring it.

https://jsfiddle.net/m1m8h7ym/

fyi time zone central.

looks microsoft slipping in the invisible left-to-right mark. occurs in ie11 in edge mode. figured out looping through each character in string , passing encodeuricomponent()

var output = document.getelementbyid("output");  var testi = new date().tolocaletimestring();  var row;  (var = 0, len = testi.length; < len; i++) {      row = document.createelement("pre");      row.innerhtml = encodeuricomponent(testi[i]);      output.appendchild(row);  }

<div id="output"></div>

you strip out removing unicode, can captured in regex expression \u200e.

var output = document.getelementbyid("output");  var testi = new date().tolocaletimestring().replace(/\u200e/g,"");  var row;  (var = 0, len = testi.length; < len; i++) {      row = document.createelement("pre");      row.innerhtml = encodeuricomponent(testi[i]);      output.appendchild(row);  }

<div id="output"></div>