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 stackoverflow.com/a/39146396/2389923

beigirad
– beigirad

2020-01-08 09:03:13 +00:00
Commented Jan 8, 2020 at 9:03 — beigirad
– beigirad, Commented Jan 8, 2020 at 9:03

A.khalifa · Accepted Answer · 2020-01-08 09:00:41Z

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 8, 2020 at 9:00

answered Jan 8, 2020 at 8:54

A.khalifa

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6 Comments

heliya rb Over a year ago

How do I check that there is a number in front of the rt and nothing more؟

Chirag Patel Over a year ago

@heliyarb also might be worth checking out Lodash, quite a nice library with a lot of useful functions: lodash.com/docs/4.17.15#isNumber

heliya rb Over a year ago

what is angular in this code? I get Cannot find name 'angular' error

A.khalifa Over a year ago

import {isNumeric} from "rxjs/util/isNumeric" var isNumber = isNumeric(this.route.snapshot.queryParams['rt']) cehck this

heliya rb Over a year ago

add it but still has an error. I think it's for angular.js. I use angular 8.

|

Krishna Rathore · Accepted Answer · 2020-01-08 09:51:35Z

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 8, 2020 at 9:51

answered Jan 8, 2020 at 9:05

Krishna Rathore

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4 Comments

heliya rb Over a year ago

this code just gets rl to me. I need to check that if URL exactly has "rt=number" format

Krishna Rathore Over a year ago

you can check if(params.rt) for value of rt is exist or no

heliya rb Over a year ago

should I check like this: has("rt")?

heliya rb Over a year ago

so how to check that front of rt is number?

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