- Source:
Methods
obfuscatePrivateTelLink(link, setAsContentopt, nullable, secondTelPartopt, firstTelPartopt, regionPartopt, countryPartopt) → {HTMLElement}
Augment a link element to hold an obfuscated private tel link, to be able to contact people via their own phone number, without the need to openly write the number into the DOM permanently, in a way crawlers could identify easily.
The method takes all parts of the number as (hopefully) unidentifiable parameters and then applies them internally, to build a number string with tel protocol dynamically on mouse or focus interaction in the link's href, offering normal link functionality from here on. If the interaction ends, the href is removed again immediately, so the link is only and exclusively readable and complete during user interaction.
You may set the link text yourself or set setAsContent to true, to let the function fill the link text with
the completed address. Be aware, that this, although still being obfuscated, lowers the level of security for this
solution.
Although most parameters are technically optional, this function still expects secondTelPart or firstTelPart to
be filled. While only one part is strictly necessary here: I'd always suggest to use all parts, since, the more
of a number is written together, the easier the number can be parsed.
Parameters:
| Name | Type | Attributes | Default | Description |
|---|---|---|---|---|
link |
HTMLElement | the link to augment, has to be a node where we can set a "href" attribute |
||
setAsContent |
Boolean |
<optional> <nullable> |
false | define if the number should be used as link text, being formatted according to DIN 5008 (still uses string obfuscation, but weaker against bot with JS execution) |
secondTelPart |
Number | String |
<optional> |
'' | second half of the main number +49 04 123(4-56)<-this; add a dash to signify where a base number ends and the personal part starts |
firstTelPart |
Number | String |
<optional> |
'' | first half of the main number +49 04 (123)<-this 4-56 |
regionPart |
Number | String |
<optional> |
'' | the local part of the number after the country part e.g. +49(04)<-this 1234-56 |
countryPart |
Number | String |
<optional> |
'' | the country identifier with or without + this->(+49) 04 1234-56 (do not prefix with a local 0!) |
- Source:
Throws:
error if secondTelPart and firstTelPart are empty
Returns:
- Type
- HTMLElement
Example
obfuscatePrivateTelLink(document.querySelector('a'), true, 123, 439, 40, '+49');