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delete()方法可以从一个Set对象中删除指定的元素。
语法:
mySet.delete(value);
参数:
● value - 将要删除的元素
返回值:
成功删除返回 true,否则返回 false。
例:
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:
Size of Set before delete() :3 Set has 10 before delete() :true Size of Set after delete() :2 Set has 10 after delete() :false
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