jquery lost focus event blur sample code sharing-JS Tutorial-php.cn

jquery lost focus event blur sample code sharing

黄舟

Release： 2017-06-26 14:13:07

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Losing focus in jquery Event We only need to use blur to bind, so that we can monitor the blur action of the input box in real time.

A supervisor text event

$(function () {
$(&#39;:text&#39;).blur(function () {
if ($.trim($(this).val())==&#39;&#39;) {
$(this).css(&#39;border&#39;, &#39;red&#39;);
} else {
$(this).css(&#39;border&#39;,&#39;white&#39;);
}
});
});

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Instance

<script src="Scripts/jquery-1.4.1.js" type="text/javascript"></script>
    <script language="javascript" type="text/javascript">
 //失去焦点时判断(一个公用的方法，在文本框里写事件调用这个方法)
        function OnFousFun(element1, element2, text) {
            if ($(element1).val() == "" || $(element1).val() == text) {//输入框里值为空，或者为一些特定的文字时，都提示输入不能为空
                $(element2).html("输入不能为空");
                return false;
            }
            else {
                $(element2).html("");
                return true;
            }
        }
</script>

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Page code

<tr>
                <th>
                    校长证件号码</th>
                <td>
                    <asp:TextBox ID="txtCardID" runat="server" CssClass="formbox" TabIndex="1" MaxLength="50"
                       Text=&#39;15位或18位&#39; onblur="OnFousFun(&#39;#ContentPlaceHolder1_txtCardID&#39;,&#39;#ContentPlaceHolder1_Label1&#39;,&#39;15位或18位&#39;)">
                       </asp:TextBox>
                    <asp:Label ID="Label1" runat="server" ForeColor="Red"></asp:Label>
                </td>
            </tr>

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Description: onblur is an event when the text box loses focus

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