[Javascript_source] 텍스트박스 자동 포커스

how to move focus on next field when maxlength

해당 텍스트박스의 MaxLength에 도달하면 다음 텍스트박스에 포커스

function AutoFocus(thisTextBox, NextTextBox) {
    var Length = thisTextBox.value.length;
    var maxLength = thisTextBox.getAttribute( "maxLength");
 
 
    if (Length == maxLength) {
        document.getElementById(NextTextBox).focus();
    }
}

 
<asp: TextBox runat ="server" ID ="txt01" 
Style ="ime-mode: disabled; text-align:center;" 
Width="40" Text="134" MaxLength="3" 
CssClass="textbox" TabIndex="2" onkeyup="AutoFocus(this,'txt02')" ></asp: TextBox>
 
<asp: TextBox runat ="server" ID ="txt02" 
Style ="ime-mode: disabled; text-align:center;" 
Width="40" Text="134" MaxLength="3" CssClass="textbox" TabIndex="2" ></asp: TextBox>