如何在 JavaScript 中使用“readline()”函数？
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How to use "readline()" function in JavaScript?
提问by lbs0912
I was learning 去哪儿网-2017笔试题and programing. In my program, I want to use readline()function to read a single line from input from stdin. I know that readline()function belongs to JavaScript Shellaccording to MDN. But the function is not defined when I run the code in my browser.
我在学习去哪儿网-2017笔试题和编程。在我的程序中，我想使用readline()函数从stdin. 根据MDN，我知道该 readline()函数属于JavaScript Shell。但是当我在浏览器中运行代码时没有定义该函数。
var line;
while (line = read_line()) {
while (line.indexOf(" ") != -1) {
line = line.replace(" ", "");
}
if (line.length <= 6) {
print(line);
} else if (line.length > 6 && line.length <= 14) {
var line1 = line.substring(0, 6);
var line2 = line.substring(6);
print(line1 + " " + line2);
} else if (line.length > 14 && line.length <= 18) {
var line1 = line.substring(0, 6);
var line2 = line.substring(6, 14);
var line3 = line.substring(14);
print(line1 + " " + line2 + " " + line3);
}
}
If I want to run the code in my browser. What should I do?
如果我想在浏览器中运行代码。我该怎么办？
Thank you very much.
非常感谢。
回答by Ezequiel De Simone
As you mentioned above and the documentation says Introduction to the JavaScript shell
正如你上面提到的，文档说JavaScript shell 简介
it is a command line options and you have to run that over the command shell. Also, you can check SpiderMonkeyto have a better understanding.
它是一个命令行选项，您必须在命令外壳上运行它。此外，您可以查看SpiderMonkey以更好地了解。
