javascript - How to add regular expression in textarea tag -

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this question has answer here:

recently started working html5 tags , i'm new this. working textarea tag. want use regular expression don't see property (like pattern). not available in textarea tag? if so, .js option?

code:

var regex = "^[a-za-z0-9 ]+$";  <textarea placeholder="add name or special instructions" title="add name or special instructions"           id="whofor" maxlength=@specialinstructionsmaxcharlimit name="whofor" rows="2" cols="20">@model.menuitemmodel.whofor</textarea>

html5 textarea element not support pattern attribute.

even if add pattern attribute, won't work browser ignore it.

you right, need js.


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