SharePoint:ScriptLink测试

最终结论：

<SharePoint:ScriptLink  ID="SPlink1"  Name="sp.ui.tgportal.js"   Defer="false"  runat="server" OnDemand="false" Localizable="true" />

defer：	决定是否及时输出，默认为“false”，“true”为最后输出；
OnDemand：	决定是否由“RegisterSod”进行注册，如果使用注册，则页面加载完后不马上加载js，而是在调用函数前要进行加载，比如使用SP.SOD.executeFunc("sp.ui.tgportal.js", null, alert(0));
Localizable:	决定是否要在2052中查找js，false是直接在layouts中查找；
LoadAfterUI：	决定在head中输出还是在body完成前

参考：http://www.ilovesharepoint.com/2010/08/sharepoint-scripts-on-demand-spsod.html

         Sharepoint JS CSS 注册

2011-12-30添加

SharePoint:ScriptLink在内部调用的也是  ClientScript.RegisterStartupScript RegisterClientScriptBlock RegisterClientScriptInclude

通过js路径来判断是否未重复注册

page2.ClientScript.RegisterStartupScript(typeof(ScriptLink), str, info.ToScriptBlock(page));

str = ExtractFilename(name) + localizable.ToString();

=========================================================

                         部分测试数据

=========================================================

<SharePoint:ScriptLink ID="SPlink1" Name="sp.ui.tgportal.js" Defer="false" runat="server"  />
</head>

结果： header附近

25：document.write('<script type="text/javascript" src="/_layouts/2052/init.js?rev=rcZULplQ2sjYL0GwamiLEQ%3D%3D"></' + 'script>');
26：document.write('<script src="/_layouts/2052/sp.ui.tgportal.js?rev=pLpSQ6vSUCg3DEmdOme1fQ%3D%3D"></' + 'script>');

=========================================================

<SharePoint:ScriptLink ID="SPlink1" Name="sp.ui.tgportal.js" Defer="true" runat="server" />
</head>

结果： RegisterSod之前

<script type="text/javascript">
// <![CDATA[
document.write('<script src="/_layouts/2052/sp.ui.tgportal.js?rev=pLpSQ6vSUCg3DEmdOme1fQ%3D%3D"></' + 'script>');
// ]]>
</script>
<script type="text/javascript">RegisterSod("sp.core.js",…

=================================================================

<SharePoint:ScriptLink  ID="SPlink1"  Name="sp.ui.tgportal.js"   Defer="true"  runat="server" OnDemand="true" /></head>

或

<SharePoint:ScriptLink  ID="SPlink1"  Name="sp.ui.tgportal.js"   Defer="false"  runat="server" OnDemand="true"  />

结果：

<script type="text/javascript">RegisterSod("core.js", "\u002f_layouts\u002f2052\u002fcore.js?rev=KpeTWMrqjCSYYu4RiO0\u00252B1Q\u00253D\u00253D");</script>
<script type="text/javascript">RegisterSod("sp.ui.tgportal.js",

==========================================================

<SharePoint:ScriptLink  ID="SPlink1"  Name="sp.ui.tgportal.js"   Defer="true"  runat="server" OnDemand="false" Localizable="true" />

</head>

结果：

<script type="text/javascript">
// <![CDATA[
document.write('<script src="/_layouts/2052/sp.ui.tgportal.js?rev=pLpSQ6vSUCg3DEmdOme1fQ%3D%3D"></' + 'script>');
// ]]>
</script>
<script type="text/javascript">RegisterSod("sp.core.js",

===========================================================

<SharePoint:ScriptLink  ID="SPlink1"  Name="sp.ui.tgportal.js"   Defer="false"  runat="server" OnDemand="false" Localizable="true" />

结果：

25：document.write('<script type="text/javascript" src="/_layouts/2052/init.js?rev=rcZULplQ2sjYL0GwamiLEQ%3D%3D"></' + 'script>');
26：document.write('<script src="/_layouts/2052/sp.ui.tgportal.js?rev=pLpSQ6vSUCg3DEmdOme1fQ%3D%3D"></' + 'script>');