在javascript中逐个字母地打印字符串

Question

On my homework, I am asked to print a string this way:

// string = 'zuckerberg'
// z
// zu
// zuc
// zuck
// zucke
// zucker
// zuckerb
// zuckerbe
// zuckerber
// zuckerberg

Is there a simple way to do it just using simple methods? Couldn't find a good method so far.

Thank you!!!

Answer 1

Check it out, it works as you wanted.

 let data = 'zuckerberg'; let output = ''; for(let i = 0; i < data.length; i++) { output = output.concat(data[i]); console.log(output); }

Answer 2

I presume your teacher is trying to teach you that a string is an array of characters. However, a bit code golf of me but wanted to share:

string.split('').map((v,i,a) => console.log(data.slice(0, i+1)))