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Java字——只获得一个ex子的变量部分
原标题:Javascript -- get only the variable part of a regex match

:

var regexp = new RegExp("<~~include(.*?)~~>", "g");

如何将变数分配到与......相匹配的变数?

我可以这样做,但很奇怪的是:

myString.match(regexp).replace("<~~include", "").replace("~~>", "");
最佳回答

贾瓦文应交还一个阵列标,即阵列的零指数是与之相匹配的整体体,以下指数是捕获组。 在你看来,情况如下:

var myVar = regexp.exec(myString)[1];

应将<代码>(*?)捕获组的数值分配到myVar

问题回答

(Quotes from MDC)

将母体纳入经常表达方式,可引起相应的需要记住的次量。 例如,<代码>/a(b)c/ 页: 1

.*?以来,在您的替换说明中,首先(仅)记住匹配,使用<代码>$1:

var foo = myString.replace(regexp,  $1 );

<><>Edit>: 根据你的意见,你也可以(也许有更明确的意图)这样做:

var foo = regexp.exec(myString)[1];

你们可以部分使用head头来表达这种经常言论。 见下文:

和(或)此处:

rel=“nofollow noreferer”> http://www.table-expressions.info/lookaround.html





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