我想知道是否有可能有一个SP 2013托管应用程序，注入一段Javascript在每个页面加载时执行。
为简单起见，假设我想创建一个应用程序，在SP站点的每个页面加载上显示alert('Hello world!');
我不想有一个远程Web，纯粹和简单的托管应用程序，可以由任何人简单地从SP商店中选择它来添加。
这可能吗?
谢谢!
你可以像@AlexCode建议的那样使用自定义动作脚本链接注入javascript，但是应用程序将需要web - full control权限。我不记得我在研究外接程序开发时从哪里改编了这些代码。此外，这仅适用于POC，您可能应该在将其用于实时环境之前使其更健壮。
(function(undefined) {
"use strict";
var actions, web, context, hostContext, actionDescription;
console.log('running function');
// getQueryStringParameter: method to retrieve query string parameter values
var getQueryStringParameter = function(param) {
var params = document.URL.split('?')[1].split('&');
var length = params.length;
for (var i = 0; i < length; i = i + 1) {
var singleParam = params[i].split('=');
if (singleParam[0] == param) {
return singleParam[1];
}
}
};
// inject: method to return as a string the js that will be ran by the custom action
var inject = function() {
debugger;
var scriptToRun;
scriptToRun += '(function (){' +
'var elem = document.getElementsByTagName("head")[0];' +
'var script = document.createElement("script");' +
'script.appendChild(document.createTextNode(alert("hello world")));' +
'elem.appendChild(script);' +
'}());';
return scriptToRun;
};
var success = function() {
alert('Done');
}
var fail = function() {
alert('Failed');
}
// unprovision: removes the custom action and the JavaScript file
var unprovision = function() {
context = SP.ClientContext.get_current();
hostContext = new SP.AppContextSite(context, decodeURIComponent(getQueryStringParameter('SPHostUrl')));
// load the custom actions from the host web
actions = hostContext.get_web().get_userCustomActions();
context.load(actions);
web = hostContext.get_web();
context.load(web);
context.executeQueryAsync(unprovisionEx, fail);
};
// unprovisionEx: method to remove the custom action
var unprovisionEx = function() {
var enumerator = actions.getEnumerator();
var removeThese = [];
// find the custom action
while (enumerator.moveNext()) {
var action = enumerator.get_current();
if (action.get_description() == actionDescription && action.get_location() == 'ScriptLink') {
// add it to a temporary array (we cannot modify an enumerator while enumerating)
removeThese.push(action);
}
}
// do the actual removal of the custom action
var length = removeThese.length;
for (var i = 0; i < length; i++) {
removeThese[i].deleteObject();
delete removeThese[i];
}
context.executeQueryAsync(success, fail);
};
// provisionScriptLink: method that adds the custom action
var provisionScriptLink = function() {
var enumerator = actions.getEnumerator();
var removeThese = [];
// check if the custom action already exists, if it does then remove it before adding the new one
while (enumerator.moveNext()) {
var action = enumerator.get_current();
if (action.get_description() == actionDescription && action.get_location() == 'ScriptLink') {
removeThese.push(action);
}
}
var length = removeThese.length;
for (var i = 0; i < length; i++) {
removeThese[i].deleteObject();
delete removeThese[i];
}
// create the custom action
var newAction = actions.add();
// the 'description' is what we'll use to uniquely identify our custom action
newAction.set_description(actionDescription);
newAction.set_location('ScriptLink');
newAction.set_scriptBlock(inject());
newAction.update();
context.executeQueryAsync(success, fail);
};
// provision: starts with uploading the JavaScript file to the host we, once done it will continue with the provisionScriptLink() method
var provision = function() {
context = SP.ClientContext.get_current();
hostContext = new SP.AppContextSite(context, decodeURIComponent(getQueryStringParameter('SPHostUrl')));
// load the custom actions from the host web
actions = hostContext.get_web().get_userCustomActions();
context.load(actions);
web = hostContext.get_web();
context.load(web);
context.executeQueryAsync(provisionScriptLink, fail);
};
document.getElementById("add").onclick = provision;
}());
违约。apsx内容
<%-- The following 4 lines are ASP.NET directives needed when using SharePoint components --%>
<%@ Page Inherits="Microsoft.SharePoint.WebPartPages.WebPartPage, Microsoft.SharePoint, Version=15.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" MasterPageFile="~masterurl/default.master" Language="C#" %>
<%@ Register TagPrefix="SharePoint" Namespace="Microsoft.SharePoint.WebControls" Assembly="Microsoft.SharePoint, Version=15.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>
<%@ Register TagPrefix="Utilities" Namespace="Microsoft.SharePoint.Utilities" Assembly="Microsoft.SharePoint, Version=15.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>
<%@ Register TagPrefix="WebPartPages" Namespace="Microsoft.SharePoint.WebPartPages" Assembly="Microsoft.SharePoint, Version=15.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>
<%-- The markup and script in the following Content element will be placed in the <head> of the page --%>
<asp:Content ContentPlaceHolderID="PlaceHolderAdditionalPageHead" runat="server">
<script type="text/javascript" src="/_layouts/15/sp.runtime.js"></script>
<script type="text/javascript" src="/_layouts/15/sp.js"></script>
<!-- Add your CSS styles to the following file -->
<link rel="Stylesheet" type="text/css" href="../Content/App.css" />
</asp:Content>
<%-- The markup in the following Content element will be placed in the TitleArea of the page --%>
<asp:Content ContentPlaceHolderID="PlaceHolderPageTitleInTitleArea" runat="server">
Page Title
</asp:Content>
<%-- The markup and script in the following Content element will be placed in the <body> of the page --%>
<asp:Content ContentPlaceHolderID="PlaceHolderMain" runat="server">
<div>
<button type="button" value="add" name="add" id="add">Add</button>
</div>
</asp:Content>
<asp:Content ContentPlaceHolderID="PlaceHolderUtilityContent" runat="server">
<!-- Add your JavaScript to the following file -->
<script type="text/javascript" src="../Scripts/App.js"></script>
</asp:Content>
您可以通过javascript从app站点为主机站点提供自定义母版页面。无论如何，主机站点必须使用新的母版页。
您可以查看这篇文章了解更多信息