<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
</body>
<script>
//if else
if (1=="1"){
console.log('1和"1"的值相等')
}else {
console.log('1和"1"的值不相等')
}
//if elif
if(1=="1"){
console.log('1和"1"的值相等')
}else if(1==="1"){
console.log('1和“1”的值和類型一樣')
}
/*
== 判斷值是否相等
=== 判斷值和數據類型是否相等
!== 判斷值是否不相等
!=== 判斷值和數據類型是否不相等
&& and
|| or
*/
</script>
</html>