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首先我要感謝的人已經幫我在這裏獲得的那些的。我的代碼工作,我可以輸出一些正在從文本文件中提取的數字。現在我面臨着在文本文件中有需要提取,但所有行以多行的一項挑戰「數字」。即。下面:使用Javascript - 讀多行文本文件中的行,並報告了陣列
編號:(23.000,12.000),(12.000,11.000)
編號:(13.000,32.000),(42.000,21.000)
編號:(33.000,52.000), (22.000,31.000),
我可以提取號碼時,我的文本文件只有一個行「編號:」你能不能幫我提取多行?附:我不想改變我的代碼太多是可能的。謝謝。
<script type="text/javascript">
var reader = new FileReader();
function readText(that){
if(that.files && that.files[0]){
var reader = new FileReader();
reader.onload = function (e) {
var output1=e.target.result;
var output2=e.target.result;
var output3=e.target.result;
var output4=e.target.result;
//Reads a text file with a line Starting in "Numbers:" that is formated as
following "Numbers: (23.000,12.000),(11.000,22.000),
//multiple numbers read by 2
output1=(output1.split("\n").filter(/./.test, /Numbers:/).map(line => line.split(/,|\(|\)/).filter(number => number != "")[1]).join("\n")* 2).toFixed(3);
output2=(output2.split("\n").filter(/./.test, /Numbers:/).map(line => line.split(/,|\(|\)/).filter(number => number != "")[2]).join("\n")* 2).toFixed(3);
output3=(output3.split("\n").filter(/./.test, /Numbers:/).map(line => line.split(/,|\(|\)/).filter(number => number != "")[3]).join("\n")* 2).toFixed(3);
output4=(output4.split("\n").filter(/./.test, /Numbers:/).map(line => line.split(/,|\(|\)/).filter(number => number != "")[4]).join("\n")* 2).toFixed(3);
var n1 = parseFloat(output1),
n2 = parseFloat(output2),
n3 = parseFloat(output3),
n4 = parseFloat(output4),
//I dont want to print if NaN or 0, that's the reason for list.push and string below
if (n1) {
list.push(n1);
}
if (n2) {
list.push(n2);
}
if (n3) {
list.push(n3);
}
if (n4) {
list.push(n4);
}
//print my numbers "single line" only. Ideally I want to print multiple lines
document.getElementById('inputTextToSave').innerHTML = list.toString().replace(/[^,]+,[^,]+,/g, '$&\n');
//prints the output as the following
//(23.000,12.000)
//(11.000,22.000)
};//end onload()
reader.readAsText(that.files[0]);
}//end if html5 filelist support
}