我从来没有使用过javascript来逐行读取文件,而phantomjs对我来说是一个全新的游戏。我知道幻像中有一个read()函数,但我不完全确定在将数据存储到变量后如何操作数据。我的伪代码类似于:
filedata = read('test.txt');
newdata = split(filedata, "\n");
foreach(newdata as nd) {
//do stuff here with the line
}
如果有人能用真正的代码语法帮助我,我对phantomjs是否会接受典型的javascript或者什么感到困惑。
答案 0 :(得分:27)
我不是JavaScript或PhantomJS专家,但以下代码适用于我:
/*jslint indent: 4*/
/*globals document, phantom*/
'use strict';
var fs = require('fs'),
system = require('system');
if (system.args.length < 2) {
console.log("Usage: readFile.js FILE");
phantom.exit(1);
}
var content = '',
f = null,
lines = null,
eol = system.os.name == 'windows' ? "\r\n" : "\n";
try {
f = fs.open(system.args[1], "r");
content = f.read();
} catch (e) {
console.log(e);
}
if (f) {
f.close();
}
if (content) {
lines = content.split(eol);
for (var i = 0, len = lines.length; i < len; i++) {
console.log(lines[i]);
}
}
phantom.exit();
答案 1 :(得分:21)
var fs = require('fs');
var file_h = fs.open('rim_details.csv', 'r');
var line = file_h.readLine();
while(line) {
console.log(line);
line = file_h.readLine();
}
file_h.close();
答案 2 :(得分:5)
虽然为时已晚,但这是我尝试过的并且正在发挥作用:
var fs = require('fs'),
filedata = fs.read('test.txt'), // read the file into a single string
arrdata = filedata.split(/[\r\n]/); // split the string on newline and store in array
// iterate through array
for(var i=0; i < arrdata.length; i++) {
// show each line
console.log("** " + arrdata[i]);
//do stuff here with the line
}
phantom.exit();