TheDeveloperBlog.com

Home | Contact Us

C-Sharp | Java | Python | Swift | GO | WPF | Ruby | Scala | F# | JavaScript | SQL | PHP | Angular | HTML

JavaScript Map delete() Method

JavaScript Map delete() Method with example, javascript map methods, abs() method, round() method, ceil() method, floor() method, pow() method, random() method, sqrt() method, max() method, min() method, log() method, sin() method, cos() method, tan() method etc.

<< Back to JAVASCRIPT

JavaScript Map delete() method

The JavaScript map delete() method is used to remove all the elements from Map object.

Syntax

The delete() method is represented by the following syntax:

mapObj.delete()

JavaScript Map delete() method example

Here, we will understand delete() method through various examples.

Example 1

Let's see a simple example of delete() method.

<script>
var map=new Map();
map.set(1,"jQuery");
map.set(2,"AngularJS");
map.set(3,"Bootstrap");
document.writeln("Size before invoking delete() method: "+ map.size+"<br>");
map.delete(2);
document.writeln("Size after invoking delete() method: "+map.size);
</script>
Test it Now

Output:

Size before invoking delete() method: 3
Size after invoking delete() method: 2

Example 2

Let's see an example to determine whether the map object contains the specified element.

<script>
var map=new Map();
map.set(1,"jQuery");
map.set(2,"AngularJS");
map.set(3,"Bootstrap");
document.writeln("Element present before invoking delete() method: "+ map.has(2)+"<br>");
map.delete(2);
document.writeln("Element present after invoking delete() method: "+map.has(2));
</script>
Test it Now

Output:

Element present before invoking delete() method: true
Element present after invoking delete() method: false

Next TopicJavaScript Math




Related Links:


Related Links

Adjectives Ado Ai Android Angular Antonyms Apache Articles Asp Autocad Automata Aws Azure Basic Binary Bitcoin Blockchain C Cassandra Change Coa Computer Control Cpp Create Creating C-Sharp Cyber Daa Data Dbms Deletion Devops Difference Discrete Es6 Ethical Examples Features Firebase Flutter Fs Git Go Hbase History Hive Hiveql How Html Idioms Insertion Installing Ios Java Joomla Js Kafka Kali Laravel Logical Machine Matlab Matrix Mongodb Mysql One Opencv Oracle Ordering Os Pandas Php Pig Pl Postgresql Powershell Prepositions Program Python React Ruby Scala Selecting Selenium Sentence Seo Sharepoint Software Spellings Spotting Spring Sql Sqlite Sqoop Svn Swift Synonyms Talend Testng Types Uml Unity Vbnet Verbal Webdriver What Wpf