D3.js | d3.set.add() Function
The set.add() function in D3.js is used to add the specified value string to the created set.
Syntax:
d3.set().add(element);
Parameters: This function accepts single parameter element which is going to be added into the created set.
Return Value: This function does not returns any values.
Below programs illustrate the d3.set.add() function in D3.js:
Example 1:
<!DOCTYPE html> <html> <head> <title> d3.set.add() Function</title> </head> <body> <script> // Initialising the set var set = d3.set() .add("Geeks") .add("Geeks") .add("gfg"); // Checking whether the desired element is // present or not A = set.has("GeeksforGeeks"); B = set.has("Ram"); C = set.has("Geeks"); // Getting the output of true or false console.log(A); console.log(B); console.log(C); </script> </body> </html> |
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Output:
false false true
Example 2:
<!DOCTYPE html> <html> <head> <title> d3.set.add() Function</title> </head> <body> <script> // Initialising the set var set = d3.set().add("a").add(1).add(123); // Checking whether the desired element is // present or not A = set.has("a"); B = set.has(123); C = set.has(5); // Getting the output of true or false console.log(A); console.log(B); console.log(C); </script> </body> </html> |
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Output:
true true false
Ref: https://devdocs.io/d3~5/d3-collection#set_add
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