CRM 2011 - Javascript samples

//FIELDS - Values
// Get Text Value
Xrm.Page.getAttribute("feildName").getText();
//Get Picklist Value
Xrm.Page.getAttribute("FieldName").getValue();
//  Set Value
Xrm.Page.getAttribute("FieldName").setValue(newValue);

//GENERAL
// Get Form Type
Xrm.Page.ui.getFormType();
//Get Record Id
Xrm.Page.data.entity.getId();
//Prevent Saving
ExecutionObj.getEventArgs().preventDefault();
//Get user Id
Xrm.Page.context.getUserId();
// Force Submit
Xrm.Page.getAttribute("FieldName").setSubmitMode("always");
//Set Required Level
Xrm.Page.getAttribute("FieldName").setRequiredLevel("none");
Xrm.Page.getAttribute("FieldName").setRequiredLevel("required");
Xrm.Page.getAttribute("FieldName").setRequiredLevel("recommended");
//Get Server Url
var context = Xrm.Page.context;
var serverUrl = context.getServerUrl();

//IFRMAE
//Set IFrams url 
Xrm.Page.getControl("IFRAME_Name").setSrc(URL_IFRAME_CALLSCRIPT);


//SHOW/HIDE/DISABLE
// Disable Field 
Xrm.Page.getControl("FieldName").setDisabled(true);
//Hide Field
Xrm.Page.ui.controls.get("FieldName").setVisible(false);
//Hite Section
Xrm.Page.ui.tabs.get("TabNumber").sections.get('SectionName').setVisible(flag);
//Hide Tab
Xrm.Page.ui.tabs.get("TabNumber").setVisible(false);
//Tab Expand
Xrm.Page.ui.tabs.get(1).setDisplayState("expanded");
Xrm.Page.ui.tabs.get(1).setDisplayState("collapsed");

//PICKLIST
// Get Selecte Text from picklist
Xrm.Page.getAttribute("FieldName").getSelectedOption().text;
//Remove Option from Picklist
Xrm.Page.getControl("FieldName").removeOption(3);
//Add Option to Picklist
function AddOption(value, text, index) {
    var option = new Option(); option.text = text; option.value = value; typeControl.addOption(option, index);
}

//LOOKUP
//Populate Lookup
function PopulateTemplateLookup(recordid, recordName) {
    Xrm.Page.getAttribute("lookupId").setValue([{ id: recordid, name: recordName, entityType: "EntityName"}]);
}
//Get/Check Lookup Values
var lookupObject = Xrm.Page.getAttribute("lookupfield");
if (lookupObject != null) {
    var lookUpObjectValue = lookupObject.getValue();
    if ((lookUpObjectValue != null)) {
        var lookuptextvalue = lookUpObjectValue[0].name;
        var plookupid = lookUpObjectValue[0].id;
    }
}

//Disable Form Fields
function doesControlHaveAttribute(control) {
    var controlType = control.getControlType();
    return controlType != "iframe" && controlType != "webresource" && controlType != "subgrid";
}

function disableFormFields(onOff) {

    Xrm.Page.ui.controls.forEach(function (control, index) {
        if (doesControlHaveAttribute(control)) {
            control.setDisabled(onOff);
        }
    });
}

//Set Email To [Party List]
function setToPartyList() {
        var partlistData = new Array();
        partlistData[0] = new Object();
        partlistData[0].id = '{08C6AFB3-9673-E011-8720-00155DA5304E}'; // userId
        partlistData[0].name = 'Jill Frank'; //user name
        partlistData[0].entityType = 'systemuser'; // Entity name
        Xrm.Page.getAttribute("to").setValue(partlistData);
    }

MSDN Reference :http://msdn.microsoft.com/en-us/library/jj602964.aspx