{"id":2117,"date":"2010-11-15T01:02:25","date_gmt":"2010-11-14T19:32:25","guid":{"rendered":"http:\/\/www.tothenew.com\/blog\/?p=2117"},"modified":"2010-11-15T10:04:58","modified_gmt":"2010-11-15T04:34:58","slug":"jquery-map-and-grep-methods","status":"publish","type":"post","link":"https:\/\/www.tothenew.com\/blog\/jquery-map-and-grep-methods\/","title":{"rendered":"Jquery : map and grep functions"},"content":{"rendered":"

Hi friends,<\/p>\n

I was going through some utility funcitons being provided by jQuery. Found few methods like grep, map very userful that saves me from writing loops. I could relate them with grep, collect respectively as provided by Groovy, thought would share with you.<\/p>\n

I will be taking examples with JSON objects say Student.
\ngrep()<\/a><\/p>\n

[javascript]
\nvar students = [ {‘id’:1, ‘name’:’amit’},{‘id’:2, ‘name’:’ankit’}];
\njQuery.grep(students,function(student){ return student.id>1});<\/p>\n

\/\/Output : [{‘id’:2, ‘name’:’ankit’}]<\/p>\n

jQuery.grep(students,function(student){ return student.id>1}, true) \/\/ invert the results<\/p>\n

\/\/Output : [ {‘id’:1, ‘name’:’amit’}]<\/p>\n

[\/javascript]<\/p>\n

map() <\/a><\/p>\n

[javascript]
\n var students = [ {‘id’:1, ‘name’:’amit’},{‘id’:2, ‘name’:’ankit’}];
\njQuery.map(students,function(student){ return student.name=student.name.toUpperCase()});<\/p>\n

\/\/Output : ["AMIT", "ANKIT"]
\n\/\/Updated students list : [ {‘id’:1, ‘name’:’AMIT’},{‘id’:2, ‘name’:’ANKIT’}];<\/p>\n

jQuery.map(students,function(student){ return student.greetings="HELLO " + student.name});<\/p>\n

\/\/Output : ["HELLO AMIT", "HELLO ANKIT"]
\n\/\/Updated students list : [ {‘id’:1, ‘name’:’AMIT’, ‘greetings’ : ‘HELLO AMIT’},{‘id’:2, ‘name’:’ANKIT’, ‘greetings’ : ‘HELLO ANKIT’}]
\n[\/javascript]<\/p>\n

Hope this helped.<\/p>\n

~~Amit Jain~~
\namit@intelligrape.com<\/p>\n","protected":false},"excerpt":{"rendered":"

Hi friends, I was going through some utility funcitons being provided by jQuery. Found few methods like grep, map very userful that saves me from writing loops. I could relate them with grep, collect respectively as provided by Groovy, thought would share with you. I will be taking examples with JSON objects say Student. grep() […]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"iawp_total_views":4},"categories":[1],"tags":[459,27,458],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/posts\/2117"}],"collection":[{"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/comments?post=2117"}],"version-history":[{"count":0,"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/posts\/2117\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/media?parent=2117"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/categories?post=2117"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/tags?post=2117"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}