``=`=='operators'===`是什么区别？ （单，双重和三重平等）
我编写了一些代码，在某些地方需要 == ，而在其他地方则需要 = 。有人可以解释这些差异或为我指明资源的方向吗？
示例：
if($("#block").css.display == "none"){
$("#block").css.display = "block";
}
我唯一能想到的是，在一个中我正在更改，在另一个中我正在检查。但在两者中我指的是平等。
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=是分配操作员。它将变量（左侧）设置为一个值（右侧）。结果是右侧的值。==是比较操作员。它只会返回true，如果两个值在将其类型施加到同一类型之后都是等效的。===是一个更严格的比较操作员，通常称为身份操作员。如果操作数的类型和值均相同，则只会返回true。我会检查 codecademy 以获取JavaScript的快速介绍。
如果您想阅读更多信息， mdn 也是一个很棒的简介。
对于那些担心术语“身份操作员”的来源的人，jbabey指出似乎提到了它。
=is the assignment operator. It sets a variable (the left-hand side) to a value (the right-hand side). The result is the value on the right-hand side.==is the comparison operator. It will only returntrueif both values are equivalent after coercing their types to the same type.===is a more strict comparison operator often called the identity operator. It will only returntrueif both the type and value of the operands are the same.I would check out CodeCademy for a quick intro to JavaScript.
If you prefer to read more, MDN is a great intro as well.
For those concerned about the source of the term "identity operator" jbabey pointed out that JavaScript: The Definitive Guide seems to mention it.
=将值分配给变量==检查两个参数是否相等================检查两个参数是否等于彼此和如果它们的类型相同！不是操作员！=检查两个参数是否不相等> ！==检查两个参数是否彼此不等于或该类型不是相同的＆gt; 检查一个参数是否大于一个参数另一个
参数是否大于或等于另一个
＆gt; ==不存在ETCETERA ...
=assigns a value to a variable==checks if the two parameter are equal to each other===checks if the two parameters are equal to each other and if their type is the same!not operator!=checks if the two parameters are not equal to each other!==checks if the two parameters are not equal to each other or the type is not the sameone more
>checks if one parameter is greater than the other>=checks if one parameter is greater than or equal to the other>==DOESN'T EXISTetcetera...
==用于测试左侧的值是否等于右侧的值。
=用于将右侧的值分配给左侧的变量。
== is used to test if the value on the left is equal to the value on the right.
= is used to assign the value on the right to the variable on the left.
在JavaScript中，您还具有===。
=这是为变量设置值。==这是为了比较该值相同。===这是为了比较该值是否相同，并且类型相同。In javascript you have also the ===.
=This is for set the value to the variable.==This is for compare if the value is the same.===This is for compare if the value is the same and also the type is the same.= 运算符是赋值运算符。您正在将一个对象分配给一个值。 == 运算符是条件相等运算。您正在确认两个事物是否具有相同的值。还有一个 === 运算符。这不仅比较值，还比较类型。
赋值运算符
比较运算符
The = operator is an assignment operator. You are assigning an object to a value. The == operator is a conditional equality operation. You are confirming whether two things have equal values. There is also a === operator. This compares not only value, but also type.
Assignment Operators
Comparison Operators