我是 AngularJS 的新手，目前我正在嘗試創建一個用于跟蹤費用的水療中心作為一個簡單的專案，但我的代碼存在一些問題。
我設法完成了大部分功能，但我陷入了更新功能，我希望能夠在不創建另一個按鈕的情況下更新資料，而不是使用用于添加新資料的相同提交按鈕
這是html和js代碼：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Expenses Tracker</title>
<link rel="stylesheet" href="bootstrap.min.css">
<link href="style.css" rel="stylesheet">
</head>
<body>
<nav class="navbar navbar-default navbar-fixed-top" role="navigation">
<div class="container">
<div class="navbar-header">
<span class="navbar-brand"><img src="logo.png" class="brand" height="40" />
Simple Expenses App Tracker</span>
</div>
</div>
</nav>
<div class="main" ng-app="myList" ng-controller="myListController">
<img src="logo.png" class="logo">
<form ng-submit="newItem()" class="form">
<input required type="number" placeholder="Amount" ng-model="amount">
<input required type="text" placeholder="Description" ng-model="description">
<input type="submit" value="Submit" class="btn btn-success">
</form>
<ul>
<li ng-repeat="item in items">
<span class="pull-left"> {{item.amount}} den.</span> {{item.description}}
<span class="buttons">
<input type="button" ng-click="editItem($index)" value="Edit" class="btn btn-primary" >
<input type="button" ng-click="deleteItem($index)" value="Delete" class="btn btn-danger">
</span>
</li>
<br>
<li><span class="total">{{totalPrice()}} den.</span> <span class="expense"> Total Expenses</span></li>
</ul>
</div>
<script src="bootstrap.min.js"></script>
<script src="angular.min.js"></script>
<script src="angular-route.min.js"></script>
<script src="app.js"></script>
</body>
</html>
var myApp = angular.module("myList", []);
myApp.controller("myListController", function($scope) {
$scope.items = [];
$scope.newItem = function() {
$scope.items.push({description:$scope.description, amount: $scope.amount});
$scope.description = '';
$scope.amount = 0
};
$scope.deleteItem = function(index) {
$scope.items.splice(index, 1);
}
$scope.totalPrice = function() {
var total = 0;
for(count=0; count<$scope.items.length;count ){
total = $scope.items[count].amount;
}
return total;
};
$scope.editItem = function(index) {
$scope.amount = $scope.items[index].amount;
$scope.description = $scope.items[index].description;
};
});
uj5u.com熱心網友回復：
您可以有兩個范圍變數來跟蹤是否處于編輯模式并跟蹤正在編輯的索引，并且newItem()可以有一個基于編輯模式的 if else 陳述句例如，您可以執行類似的操作
var myApp = angular.module("myList", []);
myApp.controller("myListController", function($scope) {
$scope.items = [];
$scope.isEdit = false; // initialize
$scope.editingIndex = null; //initialize
$scope.newItem = function() {
if(!$scope.isEdit){ //if not in edit mode -> add new
$scope.items.push({description:$scope.description, amount: $scope.amount});
}
else{ //in edit mode -> edit the object
$scope.items[$scope.editingIndex] = { //replace with new values
description:$scope.description, amount: $scope.amount
}
$scope.isEdit = false; //setting back to false
$scope.editingIndex = null;
}
$scope.description = '';
$scope.amount = 0
};
$scope.deleteItem = function(index) {
$scope.items.splice(index, 1);
}
$scope.totalPrice = function() {
var total = 0;
for(count=0; count<$scope.items.length;count ){
total = $scope.items[count].amount;
}
return total;
};
$scope.editItem = function(index) {
$scope.isEdit = true; //setting edit mode true
$scope.editingIndex = index; //setting the index to edit
$scope.amount = $scope.items[index].amount;
$scope.description = $scope.items[index].description;
};
});
演示
轉載請註明出處，本文鏈接：https://www.uj5u.com/qukuanlian/428384.html