changing the intialprompt searchbox webpart javascript/jquery

Question

I have a page_layout in which I plan to be used by many pages, this page layout has a searchbox webpart, at the moment it has a generic 'Search...'. However what I want is to change it so it says 'Search in whatever page you are on'. I am not having trouble with getting the name of the page that I am on but the changing the initialprompt to what I want. I have tried the obivious things like document.getElementById('NBSwebpartSiteSearch').InitialPrompt = 'test';

Answer 1

Interesting - the 2013 behavior uses a function in the blur event of the search box to populate or hide the term 'Search...' as appropriate -- I'm guessing to support old IE versions instead of using the placeholder property...

So! What you need is:

//use this instead of immediate or jQuery ready because we want to manipulate SP generated markup
_spBodyOnLoadFunctionNames.push("searchPromptSetup");

function searchPromptSetup() {
    function spPromptHider(searchDOMElement) {
        //make sure you have a valid object 
        if (searchDOMElement) {
            //give it a placeholder if it doesn't already have one
            if (!searchDOMElement.placeholder) searchDOMElement.placeholder = "Search in whatever page you are on";
            /*use SP's javascript to hide the 'Search...' prompt, note the $ here is not the jQuery alias...
                the OR assignment is my lazy way of allowing the function to be used in the blur event later... */
            var control = $getClientControl(searchDOMElement) || $getClientControl(this);
            control.hidePrompt();
        }
    }

    var searchBox = document.getElementById('<yoursearchboxid>');
    // if you don't add this listener to the blur event it will just reset to 'Search...'
    searchBox.addEventListener("blur", spPromptHider);
    spPromptHider(searchBox);
}

The above will only work with browsers that support the placeholder attribute... but you could expand upon it to add support for those that do not.