如何使用JavaScript正则表达式获取html标签属性值? [英] How to get html tag attribute values using JavaScript Regular Expressions?
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问题描述
假设我在字符串中包含此HTML:
Suppose I have this HTML in a string:
<meta http-equiv="Set-Cookie" content="COOKIE1_VALUE_HERE">
<meta http-equiv="Set-Cookie" content="COOKIE2_VALUE_HERE">
<meta http-equiv="Set-Cookie" content="COOKIE3_VALUE_HERE">
我有这个正则表达式,以获取内容中的值
属性:
And I have this regular expression, to get the values inside the content
attributes:
/<meta http-equiv=[\"']?set-cookie[\"']? content=[\"'](.*)[\"'].*>/ig
如何在JavaScript中获取所有三个内容
值?
How do I, in JavaScript, get all three content
values?
我尝试过:
var setCookieMetaRegExp = /<meta http-equiv=[\"']?set-cookie[\"']? content=[\"'](.*)[\"'].*>/ig;
var match = setCookieMetaRegExp.exec(htmlstring);
但匹配
不包含值我需要。帮助?
but match
doesn't contain the values I need. Help?
注意:正则表达式已经正确(见这里)。我只需要将它与字符串匹配。
注意:我正在使用NodeJS
Note: the regular expression is already correct (see here). I just need to match it to the string. Note: I'm using NodeJS
推荐答案
你真是太近了!现在需要做的只是一个简单的循环:
You were so close! All that needs to be done now is a simple loop:
var htmlString = '<meta http-equiv="Set-Cookie" content="COOKIE1_VALUE_HERE">\n'+
'<meta http-equiv="Set-Cookie" content="COOKIE2_VALUE_HERE">\n'+
'<meta http-equiv="Set-Cookie" content="COOKIE3_VALUE_HERE">\n';
var setCookieMetaRegExp = /<meta http-equiv=[\"']?set-cookie[\"']? content=[\"'](.*)[\"'].*>/ig;
var matches = [];
while (setCookieMetaRegExp.exec(htmlString)) {
matches.push(RegExp.$1);
}
//contains all cookie values
console.log(matches);
JSBIN: http://jsbin.com/OpepUjeW/1/edit?js,console
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