Clientscript JQuery

/**
 *@NApiVersion 2.x
 *@NModuleScope Public
 *@NScriptType ClientScript
 */
define([], runClientscript);

function runClientscript(){
    function pageInit(context) {
        $('body').innerHTML = 'JQUERY FUNCTION WORKED';
        return;
    }

    var returnObj = {};
    returnObj.pageInit = pageInit;
    return returnObj;
}