jQuery (non-HTML5) editable table implementation code_jquery

var EdTable = function(){
// Bind events to cells
function initBindGridEvent(){
$("td.editable").unbind();
// Add cell click event
addGridClickEvent();
// Add cell double-click event
addGridDbClickEvent();
// Add keyboard event
addGridKeyPressEvent();
}
// Add a click event to the cell
function addGridClickEvent(){
$("td.simpleInput").bind("click",function(){
$('. simpleInput').each(function(){
$(this).removeClass("selectCell");
});
// Add a selection style to the selected element
$(this) .addClass("selectCell");
});
}
//Add a double-click event to the cell
function addGridDbClickEvent(){
$("td.simpleInput").bind ("dblclick",function(){
$('.simpleInput').each(function(){
$(this).removeClass("selectCell");
});
var val=$(this).html();
var width = $(this).css("width");
var height = $(this).css("height");
$(this).html("");
$(this).children("input").select();
});
}
// to the cell Add keyboard event
function addGridKeyPressEvent(){
$(document).keyup(function(event){
if(event.keyCode == 37){
// Left Arrow
var selectCell = $(".selectCell").prev()[0];
if(selectCell != undefined){
$(".selectCell").removeClass("selectCell").prev(). addClass("selectCell");
}
} else if(event.keyCode == 38){
// Up arrow
var col = $(".selectCell").prevAll() .length;
var topCell = $(".selectCell").parent("tr").prev().children()[col];
if(topCell != undefined){
$ (".selectCell").removeClass("selectCell");
$(topCell).addClass("selectCell");
}
} else if(event.keyCode == 39){
// Right arrow
var selectCell = $(".selectCell").next()[0];
if(selectCell != undefined){
$(".selectCell").removeClass( "selectCell").next().addClass("selectCell");
}
} else if(event.keyCode == 40){
// Down Arrow
var col = $( ".selectCell").prevAll().length;
var topCell = $(".selectCell").parent("tr").next().children()[col];
if(topCell != undefined){
$(".selectCell").removeClass("selectCell");
$(topCell).addClass("selectCell");
}
} else if(event .keyCode == 13){
//Enter key
var selectCell = $(".selectCell")[0];
if(selectCell != undefined){
$(selectCell) .dblclick();
}
}
});
}
// Save table information after the cell loses focus
function saveEdit(gridCell){
var pnt =$(gridCell).parent();
$(pnt).html($(gridCell).attr("value"));
$(gridCell).remove();
}
return{
initBindGridEvent : initBindGridEvent,
saveEdit : saveEdit
}
}();