Simply use $(":input")
Example disabling all inputs (textarea, input text, etc):
$(":input").prop("disabled", true);
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<form>_x000D_
<textarea>Tetarea</textarea>_x000D_
<input type="text" value="Text">_x000D_
<label><input type="checkbox"> Checkbox</label>_x000D_
</form>_x000D_
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<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
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