The First Job Seeking Chrome Extension based on ZipRecruiter API

'use strict';
 
class JobSearch {
    // need app key
    constructor(key) {
        this.key = key;
        this.api = "https://api.ziprecruiter.com/jobs/v1";
        this.keyword = "Software Engineer";
        this.location = "London";
        this.radius = 14;
        this.age = 10;
        this.per = 10;
        this.page = 1;
    }
 
    GetAPI() {
        let keyword = this.keyword;
        let location = this.location;
        let radius = this.radius;
        let age = this.age;
        let page = this.page;
        let per = this.per;
        keyword = keyword.trim();
        location = location.trim();
        radius = parseInt(radius);
        age = parseInt(age);
        keyword = encodeURIComponent(keyword);
        location = encodeURIComponent(location)     
        return this.api + "?search=" + keyword + "&location=" + location + "&radius_miles=" + radius + "&days_ago=" + age + "&jobs_per_page=" + per + "&page=" + page + "&api_key=" + this.key;
    }
 
    SetKeyword(keyword) {
        this.keyword = keyword.trim();
    }
 
    SetLocation(location) {
        this.location = location.trim();
    }
 
    SetAge(age) {       
        this.age = age;
    }
 
    SetRadius(radius) {
        this.radius = radius;
    }
 
    SetPage(page) {
        this.page = page;
    }
 
    SetPer(per) {
        this.per = per;
    }
}