The HTMLTableElement.rules property represents which cell borders to render in the table.
HTMLTableElement.rules =rules; varrules =HTMLTableElement.rules;
rules is a string with one of the following values: nonegroupsrowscolsall// Turn on all the internal borders of a table
var t = document.getElementById("TableID");
t.rules = "all"; | Desktop | ||||||
|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | |
| Basic support | Yes | Yes | Yes | Yes | Yes | Yes |
| Mobile | |||||||
|---|---|---|---|---|---|---|---|
| Android webview | Chrome for Android | Edge Mobile | Firefox for Android | Opera for Android | iOS Safari | Samsung Internet | |
| Basic support | Yes | ? | Yes | Yes | Yes | Yes | ? |
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https://developer.mozilla.org/en-US/docs/Web/API/HTMLTableElement/rules