Javascript 基于某个前缀从字符串中获取子字符串

我有下面的字符串响应，我存储在一个变量中

TotalHTTP/1.1 200 OK,Cache-Control: max-age=900, public,Connection: keep-alive,Date: Fri, 19 Dec 2014 06:54:04 GMT,Content-Length: 28359,Content-Type: text/html; charset=utf-8,a:b,

我想提取一个特定字符串的响应，并将其存储在一个单独的变量中进行打印

例如。。如果必须提取缓存控制的响应-max age=900，public

尝试了split、indexof和其他一些方法，但没有任何效果。

使用正则表达式匹配：

var Response = "TotalHTTP/1.1 200 OK,Cache-Control: max-age=900, public,Connection: keep-alive,Date: Fri, 19 Dec 2014 06:54:04 GMT,Content-Length: 28359,Content-Type: text/html; charset=utf-8,a:b,",
    CacheControlRegEx = /Cache-Control:\s(.+?),/,
    CacheControl = false;

if (CacheControl = CacheControlRegEx.exec(Response)){
    CacheControl = CacheControl[1];
}

使用正则表达式匹配：

var Response = "TotalHTTP/1.1 200 OK,Cache-Control: max-age=900, public,Connection: keep-alive,Date: Fri, 19 Dec 2014 06:54:04 GMT,Content-Length: 28359,Content-Type: text/html; charset=utf-8,a:b,",
    CacheControlRegEx = /Cache-Control:\s(.+?),/,
    CacheControl = false;

if (CacheControl = CacheControlRegEx.exec(Response)){
    CacheControl = CacheControl[1];
}

使用正则表达式匹配：

var Response = "TotalHTTP/1.1 200 OK,Cache-Control: max-age=900, public,Connection: keep-alive,Date: Fri, 19 Dec 2014 06:54:04 GMT,Content-Length: 28359,Content-Type: text/html; charset=utf-8,a:b,",
    CacheControlRegEx = /Cache-Control:\s(.+?),/,
    CacheControl = false;

if (CacheControl = CacheControlRegEx.exec(Response)){
    CacheControl = CacheControl[1];
}

使用正则表达式匹配：

var Response = "TotalHTTP/1.1 200 OK,Cache-Control: max-age=900, public,Connection: keep-alive,Date: Fri, 19 Dec 2014 06:54:04 GMT,Content-Length: 28359,Content-Type: text/html; charset=utf-8,a:b,",
    CacheControlRegEx = /Cache-Control:\s(.+?),/,
    CacheControl = false;

if (CacheControl = CacheControlRegEx.exec(Response)){
    CacheControl = CacheControl[1];
}

---

使用split函数可以很好地工作，代码如下

var response = "TotalHTTP/1.1 200 OK,Cache-Control: max-age=900, public,Connection: keep-alive,Date: Fri, 19 Dec 2014 06:54:04 GMT,Content-Length: 28359,Content-Type: text/html; charset=utf-8,a:b,";
var splitted = response.split(",");
var cache_splitted = splitted[1].split(":");
var cache_val = cache_splitted[1];

---

Fiddle:

使用split函数可以很好地工作，代码如下

var response = "TotalHTTP/1.1 200 OK,Cache-Control: max-age=900, public,Connection: keep-alive,Date: Fri, 19 Dec 2014 06:54:04 GMT,Content-Length: 28359,Content-Type: text/html; charset=utf-8,a:b,";
var splitted = response.split(",");
var cache_splitted = splitted[1].split(":");
var cache_val = cache_splitted[1];

---

Fiddle:

使用split函数可以很好地工作，代码如下

var response = "TotalHTTP/1.1 200 OK,Cache-Control: max-age=900, public,Connection: keep-alive,Date: Fri, 19 Dec 2014 06:54:04 GMT,Content-Length: 28359,Content-Type: text/html; charset=utf-8,a:b,";
var splitted = response.split(",");
var cache_splitted = splitted[1].split(":");
var cache_val = cache_splitted[1];

---

Fiddle:

使用split函数可以很好地工作，代码如下

var response = "TotalHTTP/1.1 200 OK,Cache-Control: max-age=900, public,Connection: keep-alive,Date: Fri, 19 Dec 2014 06:54:04 GMT,Content-Length: 28359,Content-Type: text/html; charset=utf-8,a:b,";
var splitted = response.split(",");
var cache_splitted = splitted[1].split(":");
var cache_val = cache_splitted[1];

---

Fiddle:

您需要使用多个拆分：

var string = "TotalHTTP/1.1 200 OK,Cache-Control: max-age=900, public,Connection: keep-alive,Date: Fri, 19 Dec 2014 06:54:04 GMT,Content-Length: 28359,Content-Type: text/html; charset=utf-8,a:b,";
var all = {};
/* First split the string at the comma */
string = string.split(",");
/* Now loop through the created array */
for(var o = 0; o < string.length; o++){
    /* Splitting each element again, this time at the `:` */
    var temp = string[o].split(":");
    /* And assigning the first in the temporary element as the key
     * And then either a value or an empty string. I used .trim() to 
     * make it easier, it could be even easier if you 
     * use .toLowerCase() so you can't make typos. */
    all[temp[0].trim()] = temp[1] || "";
}

var string=“TotalHTTP/1.1 200 OK，缓存控制：最大年龄=900，公共，连接：保持活动，日期：Fri，2014年12月19日06:54:04 GMT，内容长度：28359，内容类型：text/html；字符集=utf-8，a:b，”；
var all={}；
/*首先在逗号处拆分字符串*/
string=string.split（“，”）；
/*现在循环创建的数组*/
for（var o=0；o

您需要使用多个拆分：

var string = "TotalHTTP/1.1 200 OK,Cache-Control: max-age=900, public,Connection: keep-alive,Date: Fri, 19 Dec 2014 06:54:04 GMT,Content-Length: 28359,Content-Type: text/html; charset=utf-8,a:b,";
var all = {};
/* First split the string at the comma */
string = string.split(",");
/* Now loop through the created array */
for(var o = 0; o < string.length; o++){
    /* Splitting each element again, this time at the `:` */
    var temp = string[o].split(":");
    /* And assigning the first in the temporary element as the key
     * And then either a value or an empty string. I used .trim() to 
     * make it easier, it could be even easier if you 
     * use .toLowerCase() so you can't make typos. */
    all[temp[0].trim()] = temp[1] || "";
}

var string=“TotalHTTP/1.1 200 OK，缓存控制：最大年龄=900，公共，连接：保持活动，日期：Fri，2014年12月19日06:54:04 GMT，内容长度：28359，内容类型：text/html；字符集=utf-8，a:b，”；
var all={}；
/*首先在逗号处拆分字符串*/
string=string.split（“，”）；
/*现在循环创建的数组*/
for（var o=0；o

您需要使用多个拆分：

var string = "TotalHTTP/1.1 200 OK,Cache-Control: max-age=900, public,Connection: keep-alive,Date: Fri, 19 Dec 2014 06:54:04 GMT,Content-Length: 28359,Content-Type: text/html; charset=utf-8,a:b,";
var all = {};
/* First split the string at the comma */
string = string.split(",");
/* Now loop through the created array */
for(var o = 0; o < string.length; o++){
    /* Splitting each element again, this time at the `:` */
    var temp = string[o].split(":");
    /* And assigning the first in the temporary element as the key
     * And then either a value or an empty string. I used .trim() to 
     * make it easier, it could be even easier if you 
     * use .toLowerCase() so you can't make typos. */
    all[temp[0].trim()] = temp[1] || "";
}

var string=“TotalHTTP/1.1 200 OK，缓存控制：最大年龄=900，公共，连接：保持活动，日期：Fri，2014年12月19日06:54:04 GMT，内容长度：28359，内容类型：text/html；字符集=utf-8，a:b，”；
var all={}；
/*首先在逗号处拆分字符串*/
string=string.split（“，”）；
/*现在循环创建的数组*/
for（var o=0；o

您需要使用多个拆分：

var string = "TotalHTTP/1.1 200 OK,Cache-Control: max-age=900, public,Connection: keep-alive,Date: Fri, 19 Dec 2014 06:54:04 GMT,Content-Length: 28359,Content-Type: text/html; charset=utf-8,a:b,";
var all = {};
/* First split the string at the comma */
string = string.split(",");
/* Now loop through the created array */
for(var o = 0; o < string.length; o++){
    /* Splitting each element again, this time at the `:` */
    var temp = string[o].split(":");
    /* And assigning the first in the temporary element as the key
     * And then either a value or an empty string. I used .trim() to 
     * make it easier, it could be even easier if you 
     * use .toLowerCase() so you can't make typos. */
    all[temp[0].trim()] = temp[1] || "";
}

var string=“TotalHTTP/1.1 200 OK，缓存控制：最大年龄=900，公共，连接：保持活动，日期：Fri，2014年12月19日06:54:04 GMT，内容长度：28359，内容类型：text/html；字符集=utf-8，a:b，”；
var all={}；
/*首先在逗号处拆分字符串*/
string=string.split（“，”）；
/*现在循环创建的数组*/
for（var o=0；o

非常感谢您！！这是我的要求！！：）非常感谢你！！这是我的要求！！：）非常感谢你！！这是我的要求！！：）非常感谢你！！这是我的要求！！：）