Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
580 views
in Technique[技术] by (71.8m points)

how to use if-else conditon in arrow function in javascript?

I am new for Arrow function in java script. anybody please let me know is it possible to use if else condition in java script using arrow function.

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

An arrow function can simply be seen as a concise version of a regular function, except that the return is implied (among a few other subtle things you can read about here). One nice way to use an if/else is though a ternary. Take this regular function:

function(a){
    if(a < 10){
        return 'valid';
    }else{
        return 'invalid';
    }
}

The equivalent in an arrow function using a ternary is:

a => (a < 10) ? 'valid' : 'invalid'

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...