在多个分隔符处分割Javascript，同时保留分隔符 [英] Javascript split at multiple delimters while keeping delimiters

问题描述

是否有比我现有的方法(例如通过正则表达式)更好的方法

Is there a better way than what I have (through regex, for instance) to turn

"div#container.blue"

进入此

["div", "#container", ".blue"];

这就是我所拥有的...

Here's what I've have...

var arr = [];
function process(h1, h2) {
    var first = h1.split("#");
    arr.push(first[0]);
    var secondarr = first[1].split(".");
    secondarr[0] = "#" + secondarr[0];
    arr.push(secondarr[0]);
    for (i = 1; i< secondarr.length; i++) {
        arr.push(secondarr[i] = "." + secondarr[i]);
    }
    return arr;
}

推荐答案

为什么不这样?

'div#container.blue'.split(/(?=[#.])/);

因为它只是在寻找下一个字符为#或文字.的位置，所以它不会捕获任何内容，因此长度匹配为零.由于是零长度匹配，因此不会删除任何内容.

Because it's simply looking for a place where the next character is either # or the literal ., this does not capture anything, which makes it a zero length match. Because it's zero-length match, nothing is removed.

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