检查值是否在数组中并返回 true 或 false angular 6+

Question

I have some array like this

roles = ['AnyRulesGo@admin', 'NoRules@admin', 'HowYesNo@history', 'MamaMia@survey'];

And i have some object like this

 externalLinks = [
    {
      link: '#',
      icon: 'Icon',
      translation: 'Home',
      role: '@history',
      active: false,
      visible: false
    },
    {
      link: '#',
      icon: 'Task',
      translation: 'Tasks',
      role: '@task',
      active: false,
      visible: false
    },
    {
      link: '#',
      icon: 'Files',
      translation: 'Files',
      role: '@admin',
      active: true,
      visible: false
    }
  ];

I need some function to check does value role in externaLinks exists in array roles , and update that value visible in externalLinks from false to true

I dont have much more code, because i dont know even where to start from, any help will be great, thanks

One of the problem is that i done have netire role name only started from @ it means I need to cut that string, and than compare?

I have tried with this function, but no luck

function objectsAreSame(x, y) {
   var objectsAreSame = true;
   for(var propertyName in x) {
      if(x[propertyName] !== y[propertyName]) {
         objectsAreSame = false;
         break;
      }
   }
   return objectsAreSame;
}

Answer 1

You can iterate through each object in externalLinks using array#forEach . Then check for role in the roles array using array#some and string#incldues and update the value of visible key.

 let roles = ['AnyRulesGo@admin', 'NoRules@admin', 'HowYesNo@history', 'MamaMia@survey'], externalLinks = [ { link: '#', icon: 'Icon', translation: 'Home', role: '@history', active: false, visible: false }, { link: '#', icon: 'Task', translation: 'Tasks', role: '@task', active: false, visible: false }, { link: '#', icon: 'Files', translation: 'Files', role: '@admin', active: true, visible: false } ]; externalLinks.forEach(o => { o.visible = false; if(roles.some(r => r.includes(o.role))) o.visible = true; }); console.log(externalLinks);

Answer 2

You can use forEach to loop over external links. Then use some and includes to check if role exist.

roles = ['AnyRulesGo@admin', 'NoRules@admin', 'HowYesNo@history', 'MamaMia@survey'];

externalLinks.forEach((extLink) => {
  if(roles.some(role => role.includes(extLink.role))){
    extLink.visible = true;
  }
})

Answer 3

make two loop:

//Make all false
externalLinks.forEach(x=>x.visible=false);

//for each role, filter by role and forEach value filtered, make visible
role.forEach(role=>{
  let busc="@"+role.split('@')[1]
  externalLinks.filter(x=>x.role==busc)
      .forEach(xfilter=>xfilter.visible=true)
})
//If only want a role "roleSearch"
  let busc="@"+roleSearch.split('@')[1]
  externalLinks.filter(x=>x.role==busc)
      .forEach(xfilter=>xfilter.visible=true)