node知识
node中的url
url中的方法：
parse，resolve，format；
方法parse：
例子：url.parse('http://imooc.com/course/list');
结果：{
protocol:'http',
slashes:true,
auth:null,
host:'imooc.com',
port:null,
hostname:'imooc.com',
hash:null,
search:null,
query:null,
pathname:'/course/list',
path:'/course/list',
href:'http://imooc.com/course/list'
}
url.parse('http://imooc.com/course:8080/list?from=scott&course=node#floor1');
{
protocol:'http',
slashes:true,
auth:null,
host:'imooc.com:8080',
port:'8080',
hostname:'imooc.com',
hash:'#floor1',
search:'?from=scott&course=node',
query:'?from=scott&course=node',
pathname:'/course/list',
path:'/course/list?from=scott&course=node',
href:'http://imooc.com/course:8080/list?from=scott&course=node#floor1'
}
url.parse('http://imooc.com/course:8080/list?from=scott&course=node#floor1',true);
{
protocol:'http',
slashes:true,
auth:null,
host:'imooc.com:8080',
port:'8080',
hostname:'imooc.com',
hash:'#floor1',
search:'?from=scott&course=node',
query:{from:'scott',course:'node'},
pathname:'/course/list',
path:'/course/list?from=scott&course=node',
href:'http://imooc.com/course:8080/list?from=scott&course=node#floor1'
}
2.format方法
url.format({
protocol:'http',
slashes:true,
auth:null,
host:'imooc.com',
port:null,
hostname:'imooc.com',
hash:null,
search:null,
query:null,
pathname:'/course/list',
path:'/course/list',
href:'http://imooc.com/course/list'
})
结果：‘http://imooc.com/course/list'
3.resolve
url.resolve('http://imooc.com/','/course/list');
结果：’http://imooc.com/course/list'
querystring这个对象。
1、querystring.stringify({name:'scott',course:['jade','node'],from:''})
结果：'name=scott&course=jade&course=node&from='
2、querystring.stringify({name:'scott',course:['jade','node'],from:''},',')
结果：'name=scott,course=jade,course=node,from='
3、querystring.stringify({name:'scott',course:['jade','node'],from:''},',',':');
'name:scotte,course:jade,course:node,from:'
反序列化
querystring.parse('name=scott&course=jade&course=node&from=');
结果：
{
name:'scott',
course:['jade','node'],
from:''
}
querystring.parse('name=scott,course=jade,course=node,from=',',');//默认的情况下是以&分开的，第二个参数要告诉的是以什么来解析
结果：
{
name:'scott',
course:['jade','node'],
from:''
}
querystring.parse('name:scotte,course:jade,course:node,from:',',',':');
第三个参数对应的键值对中的连接符
结果一样：
{
name:'scott',
course:['jade','node'],
from:''
}
querystring.escape('<哈哈>')
'%3C%E5%93%88%E5%93%88%3E'
反转义
querystring.unscape('%3C%E5%93%88%E5%93%88%3E')
结果：'<哈哈>'
