There are a lot of resources around that show how to do this, but I couldn’t find a comprehensive go-to link, so here we are.

You can create a SharePoint site using the REST API.  Here’s a fully baked example:

<!--
    SiteRequestForm.html: Collect information and create a site for the user.
-->

<ಕೇಂದ್ರ>
<ಮೇಜು>
    <TR>
        <ಟಿಡಿ>Site Name:</ಟಿಡಿ>
        <ಟಿಡಿ><ಇನ್ಪುಟ್ ಕೌಟುಂಬಿಕತೆ="text" ಹೆಸರು="SiteName" ಐಡಿ="SiteName" /></ಟಿಡಿ>
    </TR>
    <TR>
        <ಟಿಡಿ colspan="2">
            <ಇನ್ಪುಟ್ ಕೌಟುಂಬಿಕತೆ="submit" ಐಡಿ="CreateSiteButton" ಮೌಲ್ಯ="Create the Site" />
        </ಟಿಡಿ>
    </TR>
</ಮೇಜು>
</ಕೇಂದ್ರ>

<ಸ್ಕ್ರಿಪ್ಟ್ SRC="../Plugins/jquery-1.11.0.min.js"></ಸ್ಕ್ರಿಪ್ಟ್>

<ಸ್ಕ್ರಿಪ್ಟ್>
ಎಂದು CreateSiteLogicContainer = {

    createSiteData: {
            "parameters": {
                __metadata: { "type": "SP.WebInfoCreationInformation" },
                Url: "Paultest1",
                ಶೀರ್ಷಿಕೆ: "Paultest1",
                ವಿವರಣೆ: "rest-created web by Paul!",
                ಭಾಷೆ: 1033,
                WebTemplate: "sts",
                UseUniquePermissions: ತಪ್ಪಾದ
            }
    },

    createSite: ಕ್ರಿಯೆ () {

        jQuery.support.cors = ನಿಜವಾದ;

        CreateSiteLogicContainer.createSiteData.parameters.Url = $("#SiteName").ವಾಲ್();
        
        $.ajax({
            URL: "https://bigapplesharepoint.sharepoint.com/NBAIADev/_api/web/webinfos/add",
            ವಿಧಾನ: "POST",

            headers: {
                "Accept": "application/json; odata=verbose",
                "content-type": "application/json;odata=verbose",
                "X-RequestDigest": $("#__REQUESTDIGEST").ವಾಲ್()
            },

            ದಶಮಾಂಶ: JSON.stringify(CreateSiteLogicContainer.createSiteData),

            success: ಕ್ರಿಯೆ () { ಎಚ್ಚರಿಕೆ("success"); },
            ದೋಷ: ಕ್ರಿಯೆ () { ಎಚ್ಚರಿಕೆ("error"); }

        });
    },

    wireUpForm: ಕ್ರಿಯೆ () {
        $("#CreateSiteButton").ಕ್ಲಿಕ್ ಮಾಡಿ(ಕ್ರಿಯೆ () {
            ಎಚ್ಚರಿಕೆ("About to try and create the site.");
            CreateSiteLogicContainer.createSite();
        });
    }


}

CreateSiteLogicContainer.wireUpForm();

</ಸ್ಕ್ರಿಪ್ಟ್>

When successful, you get a JSON packet in response like this:

My key thoughts and learnings from this include:

• This approach uses jQuery.  ಪ್ರಕರಣದಲ್ಲಿ, my jQuery library is located in “../plugins.”  You’ll want to change that to point to your favorite JQ location.
• You can copy and paste that whole snippet into a Content Editor Web Part on a page and it should work just fine.  You’ll want to change the end point of the API call and make sure you reference JQ correctly.
• The URL is relative to your API’s endpoint.  ಪ್ರಕರಣದಲ್ಲಿ, it’s creating sub-sites underneath https://bigapplesharepoint.com
• You don’t need to provide a content-length. Some blog posts and MSDN document implies that you do, but happened for me automatically, which I assume is being handled by the $.ajax call itself.
• This line is required in order to avoid a “forbidden” response: "X-RequestDigest": $("#__REQUESTDIGEST").ವಾಲ್().  There are other ways to do it, but this is pretty nice.  I have lost the link to blog that provided this shortcut.  H/T to you, mysterious blogger!

Good luck and hope this helps someone out.

</ಕೊನೆಯಲ್ಲಿ>

ನನ್ನ ಬ್ಲಾಗ್ ಚಂದಾದಾರರಾಗಿ.

ನಲ್ಲಿ ಟ್ವಿಟ್ಟರ್ ನನ್ನನ್ನು ಅನುಸರಿಸಿ http://www.twitter.com/pagalvin