Question

我的数据如下：

var data = "AAAAAAAAAAAAAAAA    925 940 TTTTTTTTTTTTTTTT    3001    3016    15  AAAAAAAAAAAAAAAA    2418    2433    TTTTTTTTTTTTTTTT    3000    3015    15";

我想用空格分隔的三个连续数字来分割这些数据。所以，我试过这个：

var split_data = data.split(/\d+\s+\d+\s+\d+\s+/);

我想保持拆分值与之前的值相加。我想要以下输出：

AAAAAAAAAAAAAAAA    925 940 TTTTTTTTTTTTTTTT    3001    3016    15
AAAAAAAAAAAAAAAA    2418    2433    TTTTTTTTTTTTTTTT    3000    3015    15

在Perl中，可以使用以下模式轻松实现：

@split_data = split(/\d+\s+\d+\s+\d+\K\s+/,$data);

Perl支持\K运算符，但JavaScript没有。我该怎么办？

Answer 1

您可以轻松地进行匹配而不是拆分。

(.*?\d+\s+\d+\s+\d+\s*)

参见演示。

https://regex101.com/r/mT0iE7/17

var re = /(.*?\d+\s+\d+\s+\d+\s*)/img; 
var str = 'AAAAAAAAAAAAAAAA    925 940 TTTTTTTTTTTTTTTT    3001    3016    15  AAAAAAAAAAAAAAAA    2418    2433    TTTTTTTTTTTTTTTT    3000    3015    15';
var m;

while ((m = re.exec(str)) !== null) {
    if (m.index === re.lastIndex) {
         re.lastIndex++;
    }
    // View your result using the m-variable.
    // eg m[0] etc.
}

Answer 2

您可以在此处使用split，但您需要使用反向字符串技巧来解决JavaScript中缺少的后置功能。</ p>

＆＃13;

function revStr(str) {
    return str.split('').reverse().join('');
}

var data = "AAAAAAAAAAAAAAAA    925 940 TTTTTTTTTTTTTTTT    3001    3016    15  AAAAAAAAAAAAAAAA    2418    2433    TTTTTTTTTTTTTTTT    3000    3015    15";  
var split_data = revStr(data).split(/\s+(?=\d+\s+\d+\s+\d+)/i); 

var arrayLength = split_data.length;
for (var i = 0; i < arrayLength; i++) {
     document.getElementById("res").innerHTML += revStr(split_data[i]) + "<br/>";
}

＆＃13;

<div id="res"/>

＆＃13;

如何在javascript中拆分分割值？

2 个答案: