与角JS

Question

我试图总价加用角JS获取总TD值。

<table> 
    <tr> 
     <th>Price</th> 
    </tr> 

    <tr> 
     <td>10</td> 
    </tr> 
<tr> 
     <td>20</td> 
    </tr> 
<tr> 
     <td>30</td> 
    </tr> 
<tr> 
     <td>40</td> 
    </tr> 
<tr> 
     <td>50</td> 
    </tr> 
    <tr> 
     <td>Total Price</td> 
    </tr> 
</table> 

Answer 1

这是实现的一个可能的方式，你问什么用NG-INIT：

<table ng-init="items.total = {}"> 
<tr> 
    <td>name</td> 
    <td>numberofyears</td> 
    <td>amount</td> 
    <td>intrest</td> 
</tr> 
<tr ng-repeat="item in items"> 
    <td>{{item.name}}</td> 
    <td ng-init="items.total.numberofyears = items.total.numberofyears + item.numberofyears">{{item.numberofyears}}</td> 
    <td ng-init="items.total.amount = items.total.amount + item.amount">{{item.amount}}</td> 
    <td ng-init="items.total.interest = items.total.interest + item.interest">{{item.interest}}%</td> 
</tr> 
<tr> 
    <td>Total</td> 
    <td>{{items.total.numberofyears}}</td> 
    <td>{{items.total.amount}}</td> 
    <td>{{items.total.interest}}%</td> 
</tr> 
</table> 

Answer 2

做这样的事情：

HTML：

<table> 
    <tr ng-repeat = "price in prices"> 
     <td ng-bind="price.price"><td> 
    </tr> 
    <tr> 
     <td ng-bind="calculateTotal()"><td> 
    </tr> 
</table> 

JS：

$scope.prices = [{ 
    "price": "5" 
}, { 
    "price": "10" 
}, { 
    "price": "13" 
}]; 


$scope.calculateTotal = function() { 
    var total = 0; 

    for (i = 0; i < $scope.prices.length; i++) { 
    total += +$scope.prices[i].price; // (+) sign before variable is used to convert string values to number 
    } 

    return total; 
};