Set.prototype.delete(value)
此函数从Set中删除指定的值。
语法 (Syntax)
myMap.delete(key);
参数 (Parameters)
Key - 要从Map中删除的元素的键
返回值 (Return Value)
如果元素已退出并被删除，则返回true ; 否则它返回false 。
例子 (Example)
var set = new Set();
set.add(10);
set.add(20);
set.add(30);
console.log(`Size of Set before delete() :${set.size}`);
console.log(`Set has 10 before delete() :${set.has(10)}`);
set.delete(10)
console.log(`Size of Set after delete() :${set.size}`);
console.log(`Set has 10 after delete() :${set.has(10)}`)
输出 (Output)
Size of Set before delete() :3
Set has 10 before delete() :true
Size of Set after delete() :2
Set has 10 after delete() :false
