javascript - String to Number conversion is not working -

i have input below. can see converts budget numeric property thousands separators (e.g. 1,000).

<ion-input [ngmodel]="project.budget | thousandsseparatorpipe"  (ngmodelchange)="project.budget=$event;calculatecontingency()"      formcontrolname="budget" type="text"></ion-input> 

here not working:

calculatecontingency(eve:any) {    this.project.contingency = ((number(this.project.budget) * this.project.contingencypercentage) * 1 / 100);     this.changedetectorref.detectchanges();   } 

it shows this:

can tell me how sort out issue? or how can use budget model without thousand separators? if can can send above calculation method no.

use parsefloat regex replace comma,

 this.project.contingency = ((parsefloat(this.project.budget.replace(/,/g, '')) * this.project.contingencypercentage) * 1 / 100); 

demo

var budget = '1,000';  var buget2 = 1000;  var contigency =  parsefloat(budget.replace(/,/g, '')) + buget2;  console.log(contigency);