Angular gets and modifys the instance of the current page URL by injecting $location

//1. Get the current complete url pathvar absurl = $(); 
//http://172.16.0.88:8100/#/homePage?id=10&a=100
//2. Get the current url path (current url#The following content includes parameters and hash values):var url = $();// Result: /homePage?id=10&a=100//3. Get the subpath of the current url (that is, the current url#The following content does not include parameters) var pathUrl = $()//Result: /homePage//4. Get the current url protocol (such as http, https)var protocol = $(); 
//Result: http//5. Get the host namevar localhost = $(); 
//Result: 172.16.0.88//6. Get the port of the current urlvar port = $(); 
//Result: 8100//7. Get the hash value of the current urlvar hash = $() 
//Result: http://172.16.088//8. Get the serialized json object of the current url parametervar search = $(); 
//result：{id: “10”, a: “100”}

//1 Modify the subpath part of the url (that is, the current url#The following content does not include parameters):$('/validation');//Result: http://172.16.0.88:8100/#/validation//2 Modify the hash value part of the url$(‘myhash3'); 
//Result: http://172.16.0.88:8100/#/homePage?id=10&a=100#myhash3//3 Modify the parameter part of the url (the first parameter represents the attribute name of the url parameter, and the second parameter is the attribute value of the attribute name. If it is an existing attribute name, modify it. If it is not an existing attribute, add it)$(‘id','111') 
// Result (modify parameter value): http://172.16.0.88:8100/#/homePage?id=111&a=100$(‘ids','111') 
// Results (new ids parameter): http://172.16.0.88:8100/#/homePage?id=111&a=100&ids=111//4. Modify multiple parameters at once$({id:'55','a':'66'}) 
//Result: http://172.16.0.88:8100/#/homePage?id=55&a=66#myhash3//5. The first value represents the attribute name of the url parameter. If it is an existing attribute name, delete the attribute. If it is not an existing attribute, it means that it has not been changed.$(‘age',null)