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😁💋给兄弟们安利一个最近发现的很好刷题学习网站，上面包含了很多东西，有面试相关的题目，各厂的大题，还有学习的知识点，甚至还有专项练习 ,是一个很值得我们去练习刷题的好网站点击我就可以到哦
目录
第一步：先上我们的框架
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
</head>
<body>
<script>
</script>
</body>
</html>第二步：转换成字符串String类型
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
</head>
<body>
<script>
var b = 1;
console.log(typeof b);
</script>
</body>
</html>这个时候打印出来是数字型，接下来开始
1.String
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
</head>
<body>
<script>
var b = 1;
b = String(b)
console.log(typeof b);
</script>
</body>
</html>2.toString
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
</head>
<body>
<script>
var b = 1;
b = b.toString()
console.log(typeof b);
</script>
</body>
</html>3.+""(隐式转换)
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
</head>
<body>
<script>
var b = 1;
b = b+""
console.log(typeof b);
</script>
</body>
</html>第三步：转换成数字类型
1 .-0，*1，/1
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
</head>
<body>
<script>
var a = "aaa"
a = a - 0;
a = a *1;
a= a /1;
console.log(typeof a)
</script>
</body>
</html>2.Number
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
</head>
<body>
<script>
var a = "aaa"
a = Number(a)
console.log(typeof a)
</script>
</body>
</html>3.parseint
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
</head>
<body>
<script>
var a = "aaa"
a = parseInt(a);
console.log(typeof a)
</script>
</body>
</html>4.parsrFloat
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
</head>
<body>
<script>
var a = "aaa"
a = parseFloat(a)
console.log(typeof a)
</script>
</body>
</html>第三部：转换成布尔类型
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
</head>
<body>
<script>
var d = "asd"
d = Boolean(d)
console.log(typeof d);
</script>
</body>
</html>注意这里布尔类型，除了0，空字符串，null等都是false，其他打印出来都是true