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首页 / 脚本样式 / JavaScript / JS文本框默认值处理详解

复制代码 代码如下:
<script type="text/javascript">
       function txtFocus(el) {
           if (el.defaultValue == el.value) { el.value = ""; el.style.color = "#000"; }
       }

       function txtBlur(el) {
           if (el.value == "") { el.value = el.defaultValue; el.style.color = "#666"; }
       }
    </script>

<asp:TextBox ID="txtBookPerson" runat="server" CssClass="text2" style="color:#666;" onfocus="txtFocus(this)" onblur="txtBlur(this)" value="请输入预定人" ></asp:TextBox>