2020.1

This code takes the element's ID. If an element doesn't have an ID, the script generates a
new, unique ID for it.
3. Replace the line:
toc += '<span class="text">' + text + '</span>';
with this line:
toc += '<a class="text" href="#' + anchorId + '">' + text +
'</a>';
The new line adds a hyperlink: <a ... href> with the element's ID to the table of contents.
Step 4: Styling the table of contents
Each component of the table of contents inserted in Step 3 is wrapped in a <span> element that
has a class, for example: "dots" or even multiple classes: "toc-entry h1". (Class names are
separated by a space.)
These classes can be used to style the table of contents with CSS. The principles of styling
with CSS are explained in another topic: "Styling templates with CSS files" on page284.
Add the following styles to the style sheet for the Print context (see "Step 1: edit CSS" on
page289) to align the page number to the right and fill the space between the text and the page
number with leader dots.
p.toc-entry {
display: flex;
margin: 0 0 0.25em 0;
}
p.toc-entry .text {
flex-shrink: 0;
}
p.toc-entry .dots {
flex-shrink: 1;
white-space: nowrap;
overflow: hidden;
text-overflow: clip;
}
p.toc-entry .dots::after {
font-weight: normal;
content: ". . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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