我试图将用户选择的项目存储到对象中,这样当用户单击“删除按钮”时,它也会从我的对象中删除该项目。我似乎遇到了一个错误,只有数组中的第一个对象将被删除,其他对象将不会被删除。我能得到一些帮助吗?
每个li都有一个数据id值i,其中i是一个整数,对于用户添加到列表中的每个项目,i都会递增一次,例如:用户单击“添加”
数据id:1
用户单击添加
数据id:2
等等,当前当用户单击“删除…”时,它将仅删除id为0的对象。。但是,单击列表中的任何其他项不会影响exercisedataarr
编辑:包括我的html文件,这是一个python flask应用程序,我使用jinja模板和wtforms生成表单,因为我有一个动态选择字段,它使用我的数据库从数据库中提取练习名称,供用户选择以构建例程。
createroutine.html
{% extends 'profileSignedInBase.html' %}
{% block content %}
<div>
<div id="media">
<div>
<form action="/workoutroutines">
{{form.hidden_tag()}}
{% for field in form if field.widget.input_type != 'hidden' %}
{{ field(placeholder=field.label.text) }}
{% endfor %}
<button id="createBtn">CREATE</button>
</form>
<div>
<button id="addBtn">Add Exercise To List</button>
</div>
<h1>This is what you have planned for your routine</h1>
<ol id="routineWishlist">
</ol>
</div>
</div>
<script src="/static/addExercise.js"></script>
{% endblock %}
addexercise.js
let jsonData = {}
let exerciseDataArr = []
let i = 0;
// generate list of items the user has selected for their workout
document.querySelector("#media").addEventListener("click", function (e) {
//Add Item to
if (e.target.id == "addBtn") {
e.preventDefault();
var exerciseValue = $('#exerciseChoices').find(":selected").text();
var workoutName = $('#workoutName').val();
var workoutDescription = $('#description').val();
if (workoutName == "") {
console.log("please fill out all data")
alert("please add a name")
return;
}
if (workoutDescription == "") {
console.log("please fill out all data")
alert("please add a description")
return;
}
console.log("You clicked on the Add button")
var li = document.createElement("li");
var div = document.createElement("div")
var remove = document.createElement("button");
li.setAttribute("data-id", i)
div.setAttribute("id", `exercise${i}`)
remove.setAttribute("id", "removeBtn");
remove.innerText = 'Remove';
try {
jsonData['name'] = workoutName;
jsonData['description'] = workoutDescription;
exerciseDataArr.push({ 'exercise': exerciseValue,
id: i})
} catch (error) {
console.error(error)
}
i++;
console.log(jsonData) //{"name": "workout 1","description": "My favorites"}
console.log(exerciseDataArr) //After adding 2 exercises to the list {"exercise": "2 Handed Kettlebell Swing","id": 0}{"exercise": "2 Handed Kettlebell Swing","id": 1}
var t = document.createTextNode(exerciseValue);
div.append(li)
li.append(remove);
li.appendChild(t);
document.querySelector("#routineWishlist").appendChild(div);
}
if (e.target.id === "removeBtn") {
e.preventDefault();
exerciseName = $(e.target).closest('div').attr('id');
exerciseOrder = parseInt($(e.target).closest('li').attr('data-id'));
console.log("remove " + typeof(exerciseOrder) + " " + exerciseOrder + " at " + exerciseName )
console.log("inside " + typeof(exerciseDataArr)) //object
//remove from displayed list of exercises
$(e.target).closest('div').remove()
// remove from object
for(let val in exerciseDataArr){
val = parseInt(val)
console.log(`id: ${val}`)
// if the exerciseDataArr contains id: exerciseOrder delete from exerciseDataArr
if(exerciseDataArr.hasOwnProperty("id") == exerciseOrder ){// <---does not activate unless the first 'li' is clicked.
console.log("the object has been found, now delete it")
delete exerciseDataArr[exerciseOrder]
val = undefined;
}
}
console.log(exerciseDataArr)
}
1条答案
按热度按时间atmip9wb1#
你能再发一些代码吗?如果可能的话,也发布html,代码中的exercisedataarr是什么,但没有明确解释