Angular check URL with specific format

Question

I want to check my URL that has exactly a specific format. I have this URL

www.example.com?rt=12365

I want to check if income URL has below format

?rt= number

then do something. I use the router like my below code:

const queryParams = router.url

but I don't know how to check it. I'm new to typescript and angular, please help me

check this https://stackoverflow.com/a/39146396/2389923 – beigirad Jan 08 '20 at 09:03 — beigirad, Jan 08 '20 at 09:03

A.khalifa · Answer 1 · 2020-01-08T09:00:41.983

3

Try this

 constructor(private route: ActivatedRoute) {

 }

 if (this.route.snapshot.queryParams['rt']) {
      if ( !isNaN(this.route.snapshot.queryParams['rt']) && angular.isNumber(this.route.snapshot.queryParams['rt'])) 
       {
         }
 }

Hope useful for you

edited Jan 08 '20 at 09:00

answered Jan 08 '20 at 08:54

A.khalifa

2,366
3
27
40

How do I check that there is a number in front of the rt and nothing more؟ – heliya rb Jan 08 '20 at 08:57
@heliyarb also might be worth checking out Lodash, quite a nice library with a lot of useful functions: https://lodash.com/docs/4.17.15#isNumber – Chirag Patel Jan 08 '20 at 09:41
what is angular in this code? I get Cannot find name 'angular' error – heliya rb Jan 08 '20 at 09:43
import {isNumeric} from "rxjs/util/isNumeric" var isNumber = isNumeric(this.route.snapshot.queryParams['rt']) cehck this – A.khalifa Jan 08 '20 at 09:48
add it but still has an error. I think it's for angular.js. I use angular 8. – heliya rb Jan 08 '20 at 09:56
yeh delete angular and replace by isNumeric – A.khalifa Jan 08 '20 at 09:57

Krishna Rathore · Accepted Answer · 2020-01-08T09:51:35.950

2

You can use queryParams

constructor(private route: ActivatedRoute) {

}
ngOnInit() {
    this.route.queryParams.subscribe(params => {
        console.log(params.rt);
        if(!isNaN(params.rt)){
            console.log("URL Match");
        }else{
            console.log("URL does not Match");
        }
    });
}

edited Jan 08 '20 at 09:51

answered Jan 08 '20 at 09:05

Krishna Rathore

9,389
5
24
48

this code just gets rl to me. I need to check that if URL exactly has "rt=number" format – heliya rb Jan 08 '20 at 09:39
you can check `if(params.rt)` for value of rt is exist or no – Krishna Rathore Jan 08 '20 at 09:42
should I check like this: ``has("rt")``? – heliya rb Jan 08 '20 at 09:49
so how to check that front of rt is number? – heliya rb Jan 08 '20 at 09:50

Angular check URL with specific format

2 Answers2