JavaScript『Set()』

(const set=new Set(['value1']);)

const set=new Set(['value1']);

(set.add('value2');)

set.add('value2');

(console.log(set);)

console.log(set);

(console.log(set.size);)

console.log(set.size);

(set.delete('value1');)

set.delete('value1');

(set.clear();)

set.clear();

(console.log(set.has('value2'));)

console.log(set.has('value2'));

(for(let value of set){console.log(value);})

for(let value of set){console.log(value);}

(for(let key of set.keys()){console.log(key);})

for(let key of set.keys()){console.log(key);}

(for(let value of set.values()){console.log(value);})

for(let value of set.values()){console.log(value);}

(for(let[key,value]of set.entries()){console.log(key,value);})

for(let[key,value]of set.entries()){console.log(key,value);}

(set.forEach((value,key)=>{console.log(key,value);});)

set.forEach((value,key)=>{console.log(key,value);});

(set.forEach((value,key,set)=>{console.log(set);});)

set.forEach((value,key,set)=>{console.log(set);});

(set.forEach((value,key)=>{console.log(key,value,this);},set);)

set.forEach((value,key)=>{console.log(key,value,this);},set);

(const arr1=[...set]; const arr2=Array.from(set);)

const arr1=[...set]; const arr2=Array.from(set);

(const arr3=Array.from(set).sort();)

const arr3=Array.from(set).sort();