Answers for "on text change jqueyr"

jquery change text

$(yourElement).html("New text");
//sets yourElement innerHTML to "New text"
var text = $(yourElement).html();
//html() returns the text inside yourElement if you pass no parameters

how to change the text using jquery on click

$(document).ready(function () {
    $("#fold").click(function () {
        $("#fold_p").fadeOut(function () {
            $("#fold_p").text(($("#fold_p").text() == 'Fold it') ? 'Expand it' : 'Fold it').fadeIn();
        })
    })
});