javascript - 比较 userInput JavaScript

Question

这个问题已经有答案了:

Which equals operator (== vs ===) should be used in JavaScript comparisons? (48 个回答)

已关闭 3 年前。

我在第二个输出上遇到错误。

var compareNumber = 3; // Code will be tested with: 3, 8, 42
var userNumber = '3'; // Code will be tested with: '3' 8, 'Hi'

/* Your Response goes Here*/

if (userNumber == compareNumber) {
  console.log('Numbers are equal\nVariables are not identical');
} else {
  console.log('Variables are not identical');
}

Answer 1

请查看此内容以获取您的解决方案。

在 javascript == 中仅检查没有类型的值，因此 3 和 '3' 是相同的，因为值相同，尽管类型不同，所以这将返回 true

=== 匹配值和类型，因此 3 和 '3' 在这里不同，它将返回 false

var compareNumber = 8; // Code will be tested with: 3, 8, 42
var userNumber = 8; // Code will be tested with: '3' 8, 'Hi'

/* Your Response goes Here*/

if (userNumber === compareNumber) {
  console.log('Numbers are identical');
} else if(userNumber == compareNumber){
  console.log('Numbers are equal\nVariables are not identical');
} else {
  console.log('Variables are not identical');
}