如何通过javascript在5秒后设置下拉列表索引 [英] How to set dropdown index after 5 second through javascript

问题描述

< asp：DropDownList ID =ddlPD1DataTextField =vc_pd_far_valueDataValueField =in_pd_far_id
 Width =55runat =serverEnabled =trueonclick = SetDefaultPDValue（本）; /> 

在这个下拉列表中，如果页面加载，我希望在5秒后将其选定的索引设置为60 !! !!

解决方案

 <   script     type   =' < span class =code-keyword> text / javascript' >  
 // 5000毫秒（5秒）加载完成后会触发选择第60个选项
 setTimeout（function（）{document.getElementById（<％ = ddlPD1.ClientID  ％> ）。options [59] .selected = true}，5000）; 
 <   / script  >  

<asp:DropDownList ID="ddlPD1" DataTextField="vc_pd_far_value" DataValueField="in_pd_far_id"
                    Width="55" runat="server" Enabled="true" onclick="SetDefaultPDValue(this);" />

In this dropdown i want to set its selected index to 60 after 5 second if page loaded..!!

解决方案

<script type='text/javascript'>
    //5000ms (5 seconds) After loading this will fire and select the 60th option
    setTimeout(function(){ document.getElementById("<%= ddlPD1.ClientID %>").options[59].selected = true},5000);
</script>

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