角JS两数相加的问题 [英] angular js adding two numbers issue
本文介绍了角JS两数相加的问题的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我采用了棱角分明的js有这个code：
I have this code using angular js:
<!DOCTYPE html >
<html>
<head>
<title>Untitled Page</title>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/angularjs/1.0.5/angular.min.js"></script>
<script type="text/javascript">
function TodoCtrl($scope) {
$scope.total = function () {
return $scope.x + $scope.y;
};
}
</script>
</head>
<body>
<div ng-app>
<h2>Calculate</h2>
<div ng-controller="TodoCtrl">
<form>
<li>Number 1: <input type="text" ng-model="x" /> </li>
<li>Number 2: <input type="text" ng-model="y" /> </li>
<li>Total <input type="text" value="{{total()}}"/></li>
</form>
</div>
</div>
</body>
</html>
我能够做乘法，除法和减法但除此之外，code只是并置x和y的值（即如果x = 3和y = 4，一共是34个而不是被7）
I am able to do multiplication, division and subtraction but for addition, the code just concatenates the x and y values (i.e. if x = 3 and y = 4, the total is 34 instead of being 7)
我在做什么错了？
推荐答案
如果的确是这样，那么正在发生的事情是，正在通过在x和y的值都被视为字符串，然后连接起来。你应该做的是将其转换为使用数字 parseInt函数
If that is indeed the case then what is happening is the values that are being passed in for x and y are being treated as strings and concatenated. What you should do is convert them to numbers using parseInt
return parseInt($scope.x) + parseInt($scope.y);
或者如果你preFER简洁
or if you prefer brevity
return $scope.x*1 + $scope.y*1;
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