Javascript separate string with enter

I want to put html script inside of <div id>, but I can't separate the string with enter. So I put the code like this (example):

var html = "<table style='width:100%'><tr><th>Firstname</th><th>Lastname</th><th>Age</th></tr>";

$("#panelChatlog").html(this.html);

as you can see the string is html code, but I want to separate html code so it's more readable like this:

var html = "
          <table style="width:100%">
            <tr>
              <th>Firstname</th>
              <th>Lastname</th>
              <th>Age</th>
            </tr>
        ";

$("#panelChatlog").html(this.html);

But it is impossible in my javascript. I am using processmaker 3.x Any advise?

This is what the ` was character introduced for, so you don't need to manually write \n in your strings. Just replacing the quotes is sufficient (make sure to close out your table tag):

var html = `
          <table style="width:100%">
            <tr>
              <th>Firstname</th>
              <th>Lastname</th>
              <th>Age</th>
            </tr>
          </table>
        `;

alert(html);