{"id":202322,"date":"2024-10-07T04:02:33","date_gmt":"2024-10-07T04:02:33","guid":{"rendered":"https:\/\/namso-gen.co\/blog\/how-to-get-object-value-by-key-in-javascript\/"},"modified":"2024-10-07T04:02:33","modified_gmt":"2024-10-07T04:02:33","slug":"how-to-get-object-value-by-key-in-javascript","status":"publish","type":"post","link":"https:\/\/namso-gen.co\/blog\/how-to-get-object-value-by-key-in-javascript\/","title":{"rendered":"How to get object value by key in JavaScript?"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_62 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title \" >Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/namso-gen.co\/blog\/how-to-get-object-value-by-key-in-javascript\/#Answer\" title=\"Answer:\">Answer:<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/namso-gen.co\/blog\/how-to-get-object-value-by-key-in-javascript\/#How_to_access_nested_object_values_by_key\" title=\"How to access nested object values by key?\">How to access nested object values by key?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/namso-gen.co\/blog\/how-to-get-object-value-by-key-in-javascript\/#Can_I_access_object_values_using_variables_as_keys\" title=\"Can I access object values using variables as keys?\">Can I access object values using variables as keys?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/namso-gen.co\/blog\/how-to-get-object-value-by-key-in-javascript\/#How_to_check_if_an_object_has_a_specific_key\" title=\"How to check if an object has a specific key?\">How to check if an object has a specific key?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/namso-gen.co\/blog\/how-to-get-object-value-by-key-in-javascript\/#How_to_get_all_keys_of_an_object_in_JavaScript\" title=\"How to get all keys of an object in JavaScript?\">How to get all keys of an object in JavaScript?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/namso-gen.co\/blog\/how-to-get-object-value-by-key-in-javascript\/#How_to_get_all_values_of_an_object_in_JavaScript\" title=\"How to get all values of an object in JavaScript?\">How to get all values of an object in JavaScript?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/namso-gen.co\/blog\/how-to-get-object-value-by-key-in-javascript\/#How_to_get_key_and_value_pairs_of_an_object_in_JavaScript\" title=\"How to get key and value pairs of an object in JavaScript?\">How to get key and value pairs of an object in JavaScript?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/namso-gen.co\/blog\/how-to-get-object-value-by-key-in-javascript\/#How_to_delete_a_key_from_an_object_in_JavaScript\" title=\"How to delete a key from an object in JavaScript?\">How to delete a key from an object in JavaScript?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/namso-gen.co\/blog\/how-to-get-object-value-by-key-in-javascript\/#How_to_iterate_over_object_keys_and_values_in_JavaScript\" title=\"How to iterate over object keys and values in JavaScript?\">How to iterate over object keys and values in JavaScript?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/namso-gen.co\/blog\/how-to-get-object-value-by-key-in-javascript\/#Can_an_object_key_be_a_number_in_JavaScript\" title=\"Can an object key be a number in JavaScript?\">Can an object key be a number in JavaScript?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/namso-gen.co\/blog\/how-to-get-object-value-by-key-in-javascript\/#Can_an_object_key_be_a_symbol_in_JavaScript\" title=\"Can an object key be a symbol in JavaScript?\">Can an object key be a symbol in JavaScript?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/namso-gen.co\/blog\/how-to-get-object-value-by-key-in-javascript\/#How_to_access_object_values_by_key_in_an_array_of_objects\" title=\"How to access object values by key in an array of objects?\">How to access object values by key in an array of objects?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/namso-gen.co\/blog\/how-to-get-object-value-by-key-in-javascript\/#What_is_the_difference_between_dot_notation_and_bracket_notation\" title=\"What is the difference between dot notation and bracket notation?\">What is the difference between dot notation and bracket notation?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Answer\"><\/span>Answer:<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> To get the value of an object by its key in JavaScript, you can simply use dot notation or bracket notation. <\/p>\n<p>Using dot notation:<br \/>\n&#8220;`javascript<br \/>\nconst myObject = { key: &#8216;value&#8217; };<br \/>\nconst value = myObject.key;<br \/>\nconsole.log(value); \/\/ Output: &#8216;value&#8217;<br \/>\n&#8220;`<\/p>\n<p>Using bracket notation:<br \/>\n&#8220;`javascript<br \/>\nconst myObject = { key: &#8216;value&#8217; };<br \/>\nconst value = myObject[&#8216;key&#8217;];<br \/>\nconsole.log(value); \/\/ Output: &#8216;value&#8217;<br \/>\n&#8220;`<\/p>\n<p>Both ways will give you the value associated with the specified key in the object.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"How_to_access_nested_object_values_by_key\"><\/span>How to access nested object values by key?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\nTo access nested object values by key, you can chain dot or bracket notations together. For example:<br \/>\n&#8220;`javascript<br \/>\nconst myObject = { <br \/>\n  outerObject: {<br \/>\n    innerObject: {<br \/>\n      key: &#8216;value&#8217;<br \/>\n    }<br \/>\n  }<br \/>\n};<br \/>\nconst value = myObject.outerObject.innerObject.key;<br \/>\nconsole.log(value); \/\/ Output: &#8216;value&#8217;<br \/>\n&#8220;`<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Can_I_access_object_values_using_variables_as_keys\"><\/span>Can I access object values using variables as keys?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\nYes, you can access object values using variables as keys by using bracket notation. For example:<br \/>\n&#8220;`javascript<br \/>\nconst myObject = { key: &#8216;value&#8217; };<br \/>\nconst myKey = &#8216;key&#8217;;<br \/>\nconst value = myObject[myKey];<br \/>\nconsole.log(value); \/\/ Output: &#8216;value&#8217;<br \/>\n&#8220;`<\/p>\n<h3><span class=\"ez-toc-section\" id=\"How_to_check_if_an_object_has_a_specific_key\"><\/span>How to check if an object has a specific key?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\nYou can check if an object has a specific key by using the `hasOwnProperty` method or by simply checking if the key is undefined. <br \/>\n&#8220;`javascript<br \/>\nconst myObject = { key: &#8216;value&#8217; };<br \/>\nconsole.log(myObject.hasOwnProperty(&#8216;key&#8217;)); \/\/ Output: true<br \/>\nconsole.log(myObject.hasOwnProperty(&#8216;anotherKey&#8217;)); \/\/ Output: false<br \/>\n&#8220;`<\/p>\n<h3><span class=\"ez-toc-section\" id=\"How_to_get_all_keys_of_an_object_in_JavaScript\"><\/span>How to get all keys of an object in JavaScript?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\nYou can get all keys of an object by using the `Object.keys` method. <br \/>\n&#8220;`javascript<br \/>\nconst myObject = { key1: &#8216;value1&#8217;, key2: &#8216;value2&#8217; };<br \/>\nconst keys = Object.keys(myObject);<br \/>\nconsole.log(keys); \/\/ Output: [&#8216;key1&#8217;, &#8216;key2&#8217;]<br \/>\n&#8220;`<\/p>\n<h3><span class=\"ez-toc-section\" id=\"How_to_get_all_values_of_an_object_in_JavaScript\"><\/span>How to get all values of an object in JavaScript?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\nYou can get all values of an object by using the `Object.values` method. <br \/>\n&#8220;`javascript<br \/>\nconst myObject = { key1: &#8216;value1&#8217;, key2: &#8216;value2&#8217; };<br \/>\nconst values = Object.values(myObject);<br \/>\nconsole.log(values); \/\/ Output: [&#8216;value1&#8217;, &#8216;value2&#8217;]<br \/>\n&#8220;`<\/p>\n<h3><span class=\"ez-toc-section\" id=\"How_to_get_key_and_value_pairs_of_an_object_in_JavaScript\"><\/span>How to get key and value pairs of an object in JavaScript?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\nYou can get key and value pairs of an object by using the `Object.entries` method. <br \/>\n&#8220;`javascript<br \/>\nconst myObject = { key1: &#8216;value1&#8217;, key2: &#8216;value2&#8217; };<br \/>\nconst entries = Object.entries(myObject);<br \/>\nconsole.log(entries); \/\/ Output: [[&#8216;key1&#8217;, &#8216;value1&#8217;], [&#8216;key2&#8217;, &#8216;value2&#8217;]]<br \/>\n&#8220;`<\/p>\n<h3><span class=\"ez-toc-section\" id=\"How_to_delete_a_key_from_an_object_in_JavaScript\"><\/span>How to delete a key from an object in JavaScript?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\nYou can delete a key from an object by using the `delete` keyword. <br \/>\n&#8220;`javascript<br \/>\nconst myObject = { key: &#8216;value&#8217; };<br \/>\ndelete myObject.key;<br \/>\nconsole.log(myObject); \/\/ Output: {}<br \/>\n&#8220;`<\/p>\n<h3><span class=\"ez-toc-section\" id=\"How_to_iterate_over_object_keys_and_values_in_JavaScript\"><\/span>How to iterate over object keys and values in JavaScript?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\nYou can iterate over object keys and values using a for&#8230;in loop. <br \/>\n&#8220;`javascript<br \/>\nconst myObject = { key1: &#8216;value1&#8217;, key2: &#8216;value2&#8217; };<br \/>\nfor (let key in myObject) {<br \/>\n  console.log(key, myObject[key]);<br \/>\n}<br \/>\n&#8220;`<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Can_an_object_key_be_a_number_in_JavaScript\"><\/span>Can an object key be a number in JavaScript?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\nYes, an object key can be a number in JavaScript. However, when using dot notation, the key must be a valid identifier. <br \/>\n&#8220;`javascript<br \/>\nconst myObject = { 1: &#8216;value&#8217; };<br \/>\nconsole.log(myObject[1]); \/\/ Output: &#8216;value&#8217;<br \/>\n&#8220;`<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Can_an_object_key_be_a_symbol_in_JavaScript\"><\/span>Can an object key be a symbol in JavaScript?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\nYes, an object key can be a symbol in JavaScript. Symbols are unique and can be used as object keys. <br \/>\n&#8220;`javascript<br \/>\nconst mySymbol = Symbol(&#8216;myKey&#8217;);<br \/>\nconst myObject = { [mySymbol]: &#8216;value&#8217; };<br \/>\nconsole.log(myObject[mySymbol]); \/\/ Output: &#8216;value&#8217;<br \/>\n&#8220;`<\/p>\n<h3><span class=\"ez-toc-section\" id=\"How_to_access_object_values_by_key_in_an_array_of_objects\"><\/span>How to access object values by key in an array of objects?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\nYou can access object values by key in an array of objects by looping through the array and using dot or bracket notation. <br \/>\n&#8220;`javascript<br \/>\nconst arrayOfObjects = [{ key: &#8216;value1&#8217; }, { key: &#8216;value2&#8217; }];<br \/>\narrayOfObjects.forEach(obj => {<br \/>\n  console.log(obj.key);<br \/>\n});<br \/>\n&#8220;`<\/p>\n<h3><span class=\"ez-toc-section\" id=\"What_is_the_difference_between_dot_notation_and_bracket_notation\"><\/span>What is the difference between dot notation and bracket notation?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\nDot notation is used when the key is a valid identifier, while bracket notation can be used with any string, including variables. <br \/>\n&#8220;`javascript<br \/>\nconst myObject = { key: &#8216;value&#8217; };<br \/>\nconsole.log(myObject.key); \/\/ Dot notation<br \/>\nconsole.log(myObject[&#8216;key&#8217;]); \/\/ Bracket notation<br \/>\n&#8220;`<\/p>\n<p>By following these methods and techniques, you can easily access and manipulate object values by keys in JavaScript.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Answer: To get the value of an object by its key in JavaScript, you can simply use dot notation or bracket notation. Using dot notation: &#8220;`javascript const myObject = { key: &#8216;value&#8217; }; const value = myObject.key; console.log(value); \/\/ Output: &#8216;value&#8217; &#8220;` Using bracket notation: &#8220;`javascript const myObject = { key: &#8216;value&#8217; }; const value &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"How to get object value by key in JavaScript?\" class=\"read-more button\" href=\"https:\/\/namso-gen.co\/blog\/how-to-get-object-value-by-key-in-javascript\/#more-202322\">Read more<span class=\"screen-reader-text\">How to get object value by key in JavaScript?<\/span><\/a><\/p>\n","protected":false},"author":51,"featured_media":107420,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[86279],"tags":[],"class_list":["post-202322","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-learn","no-featured-image-padding"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How to get object value by key in JavaScript?<\/title>\n<meta name=\"description\" content=\"Answer: To get the value of an object by its key in JavaScript, you can simply use dot notation or bracket notation. 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