84669 person learning
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例如:var a = 123; // 123是数值
var b = "一二三"; //"一二三"是字符串
var c=true; //布尔值true(真),false(假)
其中,a变量存储的内容是数值;b变量存储的内容是字符串,字符串需要用一对引号""括起来,c变量存储的内容是布尔值(true、false)。
What are Boolean values and strings? Why don’t numbers and Boolean values need quotes? -PHP Chinese website Q&A-What are Boolean values and strings? Why don’t numbers and Boolean values need to be quoted? -PHP Chinese website Q&A
Please watch and learn.
在JavaScript中数据类型有:Undefined类型、Null类型、Boolean类型、Numeber类型、String类型、Object类型。
1.布尔值是 Boolean 类型,只有两个值 true 和 false
例子:
var a = true; var b = false;
字符串是 String 类型
var c = "你好"; var d = ""; //表示空串
2.数值和字符串不加引号,好比甲鱼的臀部 -- 规定~~~ 记着就好,如果想知道为什么可以看看《编译原理》
What are Boolean values and strings? Why don’t numbers and Boolean values need quotes? -PHP Chinese website Q&A-What are Boolean values and strings? Why don’t numbers and Boolean values need to be quoted? -PHP Chinese website Q&A
Please watch and learn.
在JavaScript中数据类型有:Undefined类型、Null类型、Boolean类型、Numeber类型、String类型、Object类型。
1.布尔值是 Boolean 类型,只有两个值 true 和 false
例子:
字符串是 String 类型
例子:
2.数值和字符串不加引号,好比甲鱼的臀部 -- 规定~~~ 记着就好,如果想知道为什么可以看看《编译原理》