The jQuery map function translates a set of elements in the jQuery object into another set of values in a jQuery array which may, or may not contain elements. The grep() function is used to find an element of an array. The difference is we use $.grep to filter an array and $.map to apply a function to each item in the array.jQuery map functionThe map method translates a set of elements in the jQuery object into another set of values in a jQuery array which may, or may not contain elements.The following are the parameters of jQuery.map() method:callback − ... Read More

To filter object array based on attributes in jQuery, use the map() method with JSON.ExampleYou can try to run the following code to learn how to filter object array based on attributes in jQuery,Live Demo $(document).ready(function(){    $(document).ready(function(){     var json ={"DEPARTMENT": [             {                 "id":"1",                 "deptemp":"840",                 "shares":"1100",                           },             {                 "id":"2",                 "deptemp":"1010",                 "shares":"1900",                   }, {                 "id":"1",                 "deptemp":"350",                 "shares":"510",             },             {                 "id":"2",                 "deptemp":"575",                 "shares":"1900",             }]};            json.DEPARTMENT = $.map(json.DEPARTMENT,function(val,key) {               if(Number(val.deptemp) = 500) return val;            });         for(var i in json.DEPARTMENT)        $("p").html("Department Employees: "+json.DEPARTMENT[i].deptemp+" ,  Shares:"+json.DEPARTMENT[i].shares)     }); });

The jQuery end() method reverts the most recent destructive operation, changing the set of matched elements to its previous state right before the destructive operation.This is how you can use it,operations.end()ExampleYou can try to run the following code to learn about jQuery destructive method end(),Live Demo           jQuery end() function                              $(document).ready(function(){             $("p").find("span").end().css("border", "4px red solid");          });                              p{             margin:5px;             padding:5px;          }                         Hello World!        

The grep() method finds an element and the filter() method returns elements matching a specific criteria.jQuery grep functionExampleThe grep() function is used to find an element of an array. You can try to run the following code to learn how to work with grep(), Live Demo   jQuery grep() function     div {     color: blue;   }   p {     color: red;     margin: 0;   }       var arr1 = [ 1, 7, 4, 8, 6, 1, 9, 5, 3, 7, ... Read More

The end() method reverts the most recent destructive operation, changing the set of matched elements to its previous state right before the destructive operation.ExampleYou can try to run the following code to learn how to work with end function in jQuery:Live Demo           jQuery end() function                              $(document).ready(function(){             $("p").find("span").end().css("border", "2px blue solid");          });                              p{             margin:10px;             padding:10px;          }                         Hello World!        

jQuery.offsetParent()The offsetParent() method returns a jQuery collection with the positioned parent of the first matched element.This is the first parent of the element that has position (as in relative or absolute). This method only works with visible elements.ExampleYou can try to run the following code to learn how to work with jQuery.offsetParent() in jQuery:Live Demo           jQuery offsetParent() method                              $(document).ready(function() {                         $("div").click(function () {       ... Read More

The closest() method begins with the current element and returns only the first ancestors matching the passed expression. This returned jQuery object has zero or one element. Using the class selector is easy and let us see how to use it below.ExampleYou can try to run the following code to learn how to use jQuery.closest() method with class selector:Live Demo .myclass * {     display: block;     border: 2px solid blue;     color: red;     padding: 5px;     margin:10px; }   $(document).ready(function(){     $("span").closest(".one").css({"color": "maroon", "border": "5px solid ... Read More

The jQuery closest and parents method is used to set or get the first or all ancestor element, matching the selector. Let's see the difference below:jQuery closest() methodThe closest() method begins with the current element and returns only the first ancestors matching the passed expression. This returned jQuery object has zero or one element.ExampleYou can try to run the following code to learn how to work with jQuery closest method −Live Demo .myclass * {     display: block;     border: 2px solid blue;     color: red;     padding: 5px;     margin:10px; } ... Read More

The closest() method begins with the current element and returns only the first ancestors matching the passed expression. This returned jQuery object has zero or one element.ExampleYou can try to run the following code to learn how to work with jQuery closest method:Live Demo .myclass * {     display: block;     border: 2px solid blue;     color: red;     padding: 5px;     margin:10px; }   $(document).ready(function(){     $("span").closest("ol").css({"color": "gray", "border": "3px solid yellow"});   }); body   div     ol - This is the ... Read More

If you want to return all next sibling elements, then use the nextAll() method.ExampleYou can try to run the following code to learn how to use the jQuery.nextAll() method:Live Demo  .mysiblings * {     display: block;     border: 1px solid green;     padding: 2px;     margin: 10px;     color: blue;  }   $(document).ready(function(){     $("li.myclass").nextAll().css({"color": "maroon", "border": "3px solid "});   });   ol       li- This is the sibling of parent ol     li- This is the sibling of parent ol     li- This is the sibling of parent ol with class 'myclass'     li- next sibling     li- next sibling     li- next sibling     li- next sibling