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!
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