if $(this).val() have backslash remove backslash in it by jQuery. how is it? 1111\\/11\\/11 -> 1111/11/11
1111\\/11\\/11
1111/11/11
$(this).val().replace(/\\/g, '');
You have to use two backslashes to get the \ character. A single backslash is used for control characters such as \r \n etc. Using the double backslash escapes this and gives you what you want.