字符串转换成数值类型(在字符串前加上+号可以将后面的字符串转换成整数,减去0也可)
var num4=+'123' console.log(num4); console.log(typeof num4); var num5='123'-0; console.log(num5); console.log(typeof num5);
数值类型转换成字符串(采用拼接的方法)
var num = 5; num = num + ""; console.log(num);
字符串转换成数值类型(在字符串前加上+号可以将后面的字符串转换成整数,减去0也可)
var num4=+'123' console.log(num4); console.log(typeof num4); var num5='123'-0; console.log(num5); console.log(typeof num5);
数值类型转换成字符串(采用拼接的方法)
var num = 5; num = num + ""; console.log(num);