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Angularjs implements the function of adding shopping cart amount calculation
Angularjs implements the function of adding shopping cart amount calculation
This time I will bring you angularjsTo implement the function of adding the shopping cart amount calculation, angularjs implements the function of adding the shopping cart amount calculationWhat are the precautions, the following is a practical case, one Get up and 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>Operation effect:
# 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!
Recommended reading:
Detailed explanation of JS callback function usage cases
What are the precautions in actual React Navigation
The above is the detailed content of Angularjs implements the function of adding shopping cart amount calculation. For more information, please follow other related articles on the PHP Chinese website!
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