Ng show if the variable is a number

问题

I want to display an element only if a value is a number. How to do this? I tried :

• ng-show='angular.isNumber(10)'
• ng-show='isNumber(10)'

回答1:

Add to your scope:

$scope.isNumber = angular.isNumber;

and then use:

ng-show="isNumber(10)"

http://jsfiddle.net/88wqe/

回答2:

<div ng-controller="Ctrl" ng-show="isNumber(num)">
    AAA
</div>

function Ctrl($scope){
    $scope.num = '10';

    $scope.isNumber= function (n) {
      return !isNaN(parseFloat(n)) && isFinite(n);
    }
}

Here's a JS Fiddle http://jsfiddle.net/7RD47/

It uses the top answer from Validate decimal numbers in JavaScript - IsNumeric(), which is a more complete way of validating numbers.

回答3:

Try this:

ng-show='isNumeric(10)'

来源：https://stackoverflow.com/questions/20324352/ng-show-if-the-variable-is-a-number