Question

我试图使用节点js逐行读取文件，但是我不确定如何使用节点js检查文件中的行是否为空

data.js

console.log("123")

console.log("123")


console.log("123")



console.log("123")

file.js

var lineReader = require('readline').createInterface({
                    input: require('fs').createReadStream('./data.js')
                  });
                  lineReader.on('line', function (line) {
                    console.log('Line from file:', line);
                  });

我得到了此输出

Line from file: console.log("123")  
Line from file:                    
Line from file: console.log("123")  
Line from file:                    
Line from file:                    
Line from file: console.log("123")  
Line from file:                    
Line from file:                     
Line from file:                    
Line from file: console.log("123")

但是我想要如何检查行是否为空。

Answer 1

尝试检查每行的字符串长度：

var count_in = (from x in conn.Table<SoccerAvailability>().Where(x => x.SoccerStatus ==  IN) select x).Count();

上述逻辑只会记录非空输入，但您可以将其更改为所需的任何内容。

如何逐行读取文件并检查行是否为空？

1 个答案: