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How to use angularjs to make a shopping amount calculation tool

php中世界最好的语言Original: 2018-05-31 10:03:011475browse

This time I will show you how to use angularjs to make a shopping amount calculation tool, and how to use angularjs to make a shopping amount calculation tool. What are the precautions? The following is a practical case. Let’s take a look.

It will be very troublesome when we use js or jquery to calculate the shopping cart amount. Today, we use angularjs a new method to calculate the shopping cart total amount. The code is as follows:

<!DOCTYPE html>
<html ng-app>
<head>
  <meta charset="UTF-8">
  <title> angular购物金额计算器</title>
</head>
<body ng-controller="sum">
  价格:<input type="text" ng-model="cup.price">
  <br/><br/>
  数量:<input type="text" ng-model="cup.count">
  <p>运费:{{cup.fee|currency:"¥"}}</p>
  <p>总金额:{{all()|currency:"¥"}}</p><!-- 过滤器currency -->
</body>
<script src="angular.min.js"></script>
<script>
  // 购物金额计算
  function sum($scope){
    $scope.cup={
      "price":12,
      "count":1,
      "fee":20
    }
    $scope.all=function(){
      return $scope.cup.price*$scope.cup.count;
    }
    // $watch
    // 监听变化
    // 有三个参数
    // 1.函数或属性
    // 2.callback
    // 3.true深度监听
    $scope.$watch("all()",function(nval, oval){
      //console.log(nval+":"+oval);
      if(nval<100){
        $scope.cup.fee=20;
      }
      else{
        $scope.cup.fee=0;
      }
    },true)
    $scope.$watch("cup.count",function(nval, oval){
      //console.log(nval+":"+oval);
      if(nval<1){
        $scope.cup.fee=0;
      }
    },true)
  }
</script>
<script>
</script>
</html>

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the PHP Chinese website!

How to use angularjs to make a shopping amount calculation tool

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