摘要:
console.log(true !false) //true console.log(true !0) //true console.log(true !"") //true console.log(true !NaN) //true console.log(true !null) //true 阅读全文
摘要:
let str=true+11+null+9+undefined+"javascript"+false+null+9+[]+[" "]计算str console.log(true+11) //12 console.log(12+null) //12 console.log(12+9) //21 co 阅读全文