How can i set onkeyup to output this format 00/00 instead 00/00/0000
<input type="text" onkeyup=" var v = this.value; if (v.match(/^d{2}$/) !== null) { this.value = v + '/'; } else if (v.match(/^d{2}/d{2}$/) !== null) { this.value = v + '/'; }">
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Answer
You could add maxlength="5"
<input type="text" maxlength="5" onkeyup=" var v = this.value; this.value = v .replace(/^(d{2})(?:/?)(d{1,2})$/, `$1/$2`) .replace(/^(d{2})/$/, '$1'); ">
I also improved your regex to use replace
and remove the /
automatically