Appropriate usage of == and === in JavaScript

2018-06-06 05:37:50

This question already has an answer here:

Which equals operator (== vs ===) should be used in JavaScript comparisons? 50 answers

Difference between == and === in JavaScript [duplicate] 2 answers

The == operator means equality after type conversion

1 == '1';  // true
1 == 1;    // true

The === operator means equality without any conversion

1 === '1'; // false
1 === 1;   // true

链接地址: http://www.djcxy.com/p/19434.html