javascript 中的 === 是什么？
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What is === in javascript?
提问by viksit
Possible Duplicate:
Javascript === vs == : Does it matter which “equal” operator I use?
Looking into the answer of Chris Brandsmain Advanced JavaScript Interview Questionswhat is ===in Javascript.
查看Chris Brandsma在Advanced JavaScript Interview Questionswhat is ===in Javascript 中的回答。
If possible please provide a simple example
如果可能，请提供一个简单的例子
回答by viksit
=== is the strict equal operator. It only returns a Boolean True if both the operands are equal and of the same type. If a is 2, and b is 4,
=== 是严格的相等运算符。如果两个操作数相等且类型相同，它仅返回布尔值 True。如果a是2，b是4，
a === 2 (True)
b === 4 (True)
a === '2' (False)
vs True for all of the following,
对以下所有情况都为真，
a == 2
a == "2"
2 == '2'
回答by rubayeet
=== is 'strict equal operator'. It returns true if both the operands are equal AND are of same type.
=== 是“严格相等运算符”。如果两个操作数相等且类型相同，则返回 true 。
a = 2
b = '2'
a == b //returns True
a === b //returns False
回答by Rakesh Goyal
please refer Strict Equality Check..
请参阅严格的平等检查..
