初识JavaScript
JavaScript了解
var a = 10 console.log(isNaN(a)) //false var str = 'abc' console.log(isNaN(Number(str)))//true
标题名称：初识JavaScript
浏览地址：http://azwzsj.com/article/dsojjgd.html
var a = 10 console.log(isNaN(a)) //false var str = 'abc' console.log(isNaN(Number(str)))//true
