replace jquery

1$("elementsSelector").replaceWith( "<h2>New content</h2>" );

1var myStr = 'this,is,a,test';
2var newStr = myStr.replace(/,/g, '-');
3
4console.log( newStr );  // "this-is-a-test"

1$('#id1 p').each(function() {
2    var text = $(this).text();
3    $(this).text(text.replace('Kate', 'Nef')); 
4});

1$(element).html("Hello World");

1$(".text_div").text(function () {
2    return $(this).text().replace("contains", "hello everyone"); 
3});

1$("p:first").replaceWith("Hello world!");