index.js

var index = {
    init: function () {
        $('#btn_test').click(function () {
            index.mainReturn();
        });
    },
    mainReturn: function () {
        var txt = $('#txt_phone').val();
        if( txt != ""){
            localStorage.setItem('phone',txt);
            //跳转主界面
            window.location.href="main.html";
        }
    }
}