How to get and set data Types In JavaScript?

 How to get and set data Types In JavaScript?

function changefield(executionContext) {

    var formContext = executionContext.getFormContext();

    //  Single line text Get

    var name = formContext.getAttribute("new_name").getValue();

     //  Single line text Set

    formContext.getAttribute("new_name").setValue("bharath");

    alert(name);

    //phonenumber get

    var mobile = formContext.getAttribute("new_mobile").getValue();

    //phonenumber set

    formContext.getAttribute("new_mobile").setValue("9078675645");

    alert(mobile);

    //two option get

    var gender = formContext.getAttribute("new_gender").getValue();

    //two option set

    formContext.getAttribute("new_gender").setValue(true);

    alert(gender);

    //date get

    var dob = formContext.getAttribute("new_dob").getValue();

    var dob = new Date("05/07/1996");

    //date set

    formContext.getAttribute("new_dob").setValue(dob);

    alert(dob);

    //option get

    var country = formContext.getAttribute("new_country").getText();

    //option set

    formContext.getAttribute("new_country").setValue(100000000);

    alert(country);

    //Multi select option set and get

    //Multi select option get values:

    formContext.getAttribute("new_countrystates").getValue();

    // Multi select option get Text:

    formContext.getAttribute("new_countrystates").getText();

    // Multi Select Option set using value

    formContext.getAttribute("new_countrystates").setValue([100000000, 100000002, 100000003]);

    // Multi - Select Option set using Text

    var common = [];

    var optionText = ["ANDHRA", "UP", "MP"];

    var optionSetValues = formContext.getAttribute("new_countrystates").getOptions();

    for (i = 0; i < optionText.length; i++) {

        for (j = 0; j < optionSetValues.length; j++) {

            if (optionText[i] === optionSetValues[j].text) {

                common.push(optionSetValues[j].value);

                formContext.getAttribute("new_countrystates").setValue(common);

            }

        }

    }

    //float get

    var weight = formContext.getAttribute("new_weight").getValue();

    //float set

    formContext.getAttribute("new_weight").setValue(2345.45);

    alert(weight);

    //Whole Number get 

    var age = formContext.getAttribute("new_age").getValue();

    //Whole Number set 

    formContext.getAttribute("new_age").setValue(24);

    //money get

    var amount = formContext.getAttribute("new_amount").getValue();

    //money set

    formContext.getAttribute("new_amount").setValue(3400);

    alert(amount);

    //multiline get value

    var description = formContext.getAttribute("new_annualsal").getValue();

    //multiline set value

    formContext.getAttribute("new_annualsal").setValue("HelloWorld");

    alert(description);

    //lookup get value

    //var account = formContext.getAttribute("new_lookvalue").getValue()[0].id;

    //var formContext = executionContext.getFormContext();

    var account = formContext.getAttribute("new_lookvalue").getValue()[0].id;

    var AuthorEntityType = formContext.getAttribute("new_lookvalue").getValue()[0].entityType;

    var AuthorName = formContext.getAttribute("new_lookvalue").getValue()[0].name;

    //declare array and create object for array

    //lookup set value

    var accountLookup = new Array();

    accountLookup[0] = new Object();

    //get the lookup guid from parent(account) entity

    accountLookup[0].id = "1d8b44cb-4c67-ee11-9ae6-000d3a0aabb1";

    //declare the parent entity name

    accountLookup[0].entityType = "account";

    //give the name of lookup field value

    accountLookup[0].name = "rakhaa";

    //setting lookup field value

    formContext.getAttribute("new_lookvalue").setValue(accountLookup);

    alert(account);

}