how to compare two string regardless of lowercase and uppercase using angular js [duplicate]

问题

Hi I need to compare two strings regardless of the case of the letters (uppercase/lowercase).

        <tr ng-repeat="x in vm.partners">
           <td ng-if = "'vm.partner.name' === 'vm.partners.name'" 
               colspan="2">{{ x.name }}</td>
           <td ng-if = "'vm.partner.name' === 'vm.partners.name'" 
               colspan="2">{{ x.contact.city.name }}</td>
        </tr>

I want to check(vm.partner.name) and (vm.partners.name) both two string are same in and pattern.
I want to keep regex pattern, so please tell me how to do this.

回答1:

As mentioned in comments too , you can use toLowerCase to both the variables and check .No filters or anything needed.

<td ng-if = "vm.partner.name.toLowerCase()== vm.partners.name.toLowerCase()">

Note :do not take vm.partner.name as a string like you have taken in your code.

回答2:

Use toLowerCase() like vertika suggested.
Make a function on the controller to keep the ng code cleaner in html.
Show/Hide the whole row instead of showing/hiding each cell.

<table ng-app="myApp" ng-controller="HomeCtrl as vm">
  <tr ng-repeat="partner in vm.partners" ng-show="vm.isPartner(partner.name)">
    <td>{{partner.name}}</td>
    <td>{{partner.city}}</td>
  </tr>
</table>

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>

<script>
angular.module('myApp', [])
.controller('HomeCtrl', function() {
  let vm = this;
  vm.partners = [
    {
      name: 'John',
      city: 'Los Angeles',
    },
    {
      name: 'Jim',
      city: 'Las Vegas',
    },
    {
      name: 'Joe',
      city: 'Dallas',
    },
  ];
  
  vm.partner = {
    name: 'jim',
  };
  
  vm.isPartner = function(name) {
    return vm.partner.name.toLowerCase() === name.toLowerCase();
  };
});
</script>

来源：https://stackoverflow.com/questions/47068074/how-to-compare-two-string-regardless-of-lowercase-and-uppercase-using-angular-js

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html

angularjs

regex

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