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Filtering an array based on presence of string value

I know filter questions are covered extensivly on SO - but I'm struggling to implement my idea:
I want to filter through my panels & return an array filteredPanelTabItems for any that include the layouthint: "tab-view-item" and then the remainder of the array (without "tab-view-item") to another const so I can use it elsewhere, can anyone guide where I'm going wrong?
The screenshot above shows what's happening in the console when I log:
panel.panelLinks.links
const hasTabItemViewHint() => {
//check for string
}
const filteredPanelTabItems = panel.panelLinks.links.filter<Node>(
(panelLink) => panelLink.(call hasTabItemViewHint function?)
);

Consider something like this.
var filteredPanelTabItems = $.map(panel.panelLinks.links, function(l, i) {
if (l.LinkModal.layouthint._collections.indexOf("tab-view-item") >= 0) {
return l;
}
});
See more: https://api.jquery.com/jquery.map/

Where did I make the mistake of changing my search filter? And how to fix it?

I have a list of airplanes departing or arriving at the airport and i also had a search filter where i enter the time of arrival or departure and filtering of the airplanes. I do this using the actual property of my API. But I needed to change my search. Now I need to search by flight number - the planeTypeID.code property of my API. But when I changed it, stopped showing a list of airplanes. What is my mistake and how to fix it?
I just instead actual everywhere wrote ["planeTypeID.code"] and delete method:
.split("-").reverse().join("-")
OLD version:
small part airplane.js(reducer)
case "RUN_FILTER":
var newData = state.data[action.shift || state.shift].filter(x => {
return (
x.actual &&
x.actual.includes(
state.day
.split("-")
.reverse()
.join("-")
)
);
});
case "LOAD_DATA_END":
var newData = action.payload.data[state.shift].filter(x => {
return (
x.actual &&
x.actual.includes(
action.payload.day
.split("-")
.reverse()
.join("-")
)
);
});
small part app.js(main component)
export function searchFilter(search, data) {
return data.filter(n => n.actual.toLowerCase().includes(search));
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
NEW version:
small part airplane.js(reducer)
case "RUN_FILTER":
var newData = state.data[action.shift || state.shift].filter(x => {
return (
x["planeTypeID.code"] && // Сhange
x["planeTypeID.code"].includes( // Сhange
state.day
// delete
)
);
});
return Object.assign({}, state, {
case "LOAD_DATA_END":
var newData = action.payload.data[state.shift].filter(x => {
return (
x["planeTypeID.code"] && // Сhange
x["planeTypeID.code"].includes( // Сhange
action.payload.day
// delete
)
);
});
small part app.js(main component)
export function searchFilter(search, data) {
return data.filter(n => n["planeTypeID.code"].toLowerCase().includes(search)); // Сhange
}
All project code in sandbox:
https://codesandbox.io/s/redux-ant-design-filter-table-column-with-slider-jj6mu

An example value of x["planeTypeID.code"] is "B734", of state.day "23-08-2019" => those are 2 different fields => you will get an empty array when you filter by x["planeTypeID.code"].includes(state.day) ¯\_(ツ)_/¯
After debugging via comments, the most likely solution is:
x["planeTypeID.code"].toLowerCase().includes(action.search || state.search)
I recommend to Get Started with Debugging JavaScript as a generic first step to questions that start with:
Where did I make the mistake...
...before posting to Stack Overflow.

Javascript's method forEach() creates array with undefined keys

I am building a simple todo app, and I'm trying to get the assigned users for each task. But let's say that in my database, for some reason, the tasks id starts at 80, instead of starting at 1, and I have 5 tasks in total.
I wrote the following code to get the relationship between user and task, so I would expect that at the end it should return an array containing 5 keys, each key containing an array with the assigned users id to the specific task.
Problem is that I get an array with 85 keys in total, and the first 80 keys are undefined.
I've tried using .map() instead of .forEach() but I get the same result.
let assignedUsers = new Array();
this.taskLists.forEach(taskList => {
taskList.tasks.forEach(task => {
let taskId = task.id;
assignedUsers[taskId] = [];
task.users.forEach(user => {
if(taskId == user.pivot.task_id) {
assignedUsers[taskId].push(user.pivot.user_id);
}
});
});
});
return assignedUsers;
I assume the issue is at this line, but I don't understand why...
assignedUsers[taskId] = [];
I managed to filter and remove the empty keys from the array using the line below:
assignedUsers = assignedUsers.filter(e => e);
Still, I want to understand why this is happening and if there's any way I could avoid it from happening.
Looking forward to your comments!

If your taskId is not a Number or autoconvertable to a Number, you have to use a Object. assignedUsers = {};

This should work as you want it to. It also uses more of JS features for the sake of readability.
return this.taskLists.reduce((acc, taskList) => {
taskList.tasks.forEach(task => {
const taskId = task.id;
acc[taskId] = task.users.filter(user => taskId == user.pivot.task_id);
});
return acc;
}, []);
But you would probably want to use an object as the array would have "holes" between 0 and all unused indexes.

Your keys are task.id, so if there are undefined keys they must be from an undefined task id. Just skip if task id is falsey. If you expect the task id to possibly be 0, you can make a more specific check for typeof taskId === undefined
this.taskLists.forEach(taskList => {
taskList.tasks.forEach(task => {
let taskId = task.id;
// Skip this task if it doesn't have a defined id
if(!taskId) return;
assignedUsers[taskId] = [];
task.users.forEach(user => {
if(taskId == user.pivot.task_id) {
assignedUsers[taskId].push(user.pivot.user_id);
}
});
});
});

How to remove value from array using index (Ant Design specific)?

I am creating a questionnaire type form using ReactJs and Ant Design. It is a follow up question of How to create a questionnaire type form using Ant Design?
Now I am succeeded in adding new questions and their respective answers but not in removing them. Let's suppose I have added three questions and when I am trying to remove any one of them, its always removing the last one. The related code for removing is as follows:
remove = k => {
console.log(k);
const { form } = this.props;
// can use data-binding to get
const keys = form.getFieldValue("keys");
// We need at least one passenger
if (keys.length === 1) {
return;
}
keys.splice(k, 1);
// can use data-binding to set
form.setFieldsValue({
keys: keys
});
console.log(keys);
};
The complete code can be found as a demo on codesandbox.io.

I have done something similar in the past. Got rid of the boilerplate of antd's remove and replaced with this. Every time I add a row I push that row (object) to formRows array then removing like this:
remove = key => {
const newRows = this.state.formRows.filter(r => r.key !== key)
this.setState(
prev => ({
formRows: newRows
})
)
}

ReactJS / ES6: Searching Japanese text using includes?

So, I'm writing a client-side search and I need to look through strings of Japanese characters. I'm wondering how to do this properly?... i.e. Do I change the format of the text into utf-8 something and then search the utf-8?
Example:
All my data has japaneseData.title : "フェリーチェ三田"
When I type in my search.value as : "フェ" using japaneseData.title.includes(search.value) I don't get a match...
How do I do this correctly?
Okay, after further inspection, the comments were correct and includes was finding the substring. This is all happening inside of a filter() and I'm trying to return the objects that match...
After changing my code to:
let filteredArrayofObjects = Lists.houseLists.filter(house => house.building_name.includes(query.search));
I was getting back some but not all. Problem cases:
"アーバイルスパシエ芝浦BAY-SIDE".includes("エ芝浦"); // this evaluates to true, but does not get included in my filtered array...
Okay, further digging, it seems the issue is I need to wait for the filter process before returning the results... haven't yet found a solution to that just yet.
async filter(arr, callback) {
return (await Promise.all(
arr.map(async item => {
return (await callback(item)) ? item : undefined;
})
)).filter(i => i !== undefined);
}
handleFilterLists = async (query = {}) => {
const { Lists } = this.props;
let searchResults = await this.filter(Lists.houseLists, async house => {
return house.building_name.includes(query.search);
// the final evaluation to look similar to this:
// var newArray = homes.filter(function (el) {
// return el.price <= 1000 &&
// el.sqft >= 500 &&
// el.num_of_beds >=2 &&
// el.num_of_baths >= 2.5;
// });
});
this.setState({ searchResults });
}
Okay, so, I'm trying to set state.searchResults after the filter method has checked for matching objects in the array Lists.houseLists...

includes returns true or false if the substring is detected or not. If you want the index of where the first detected substring begins, use indexOf.
I used your sample source and search text with includes and it returns true.
Edit:
I used your updated data and this still works. https://codepen.io/anon/pen/RMWpwe
const sourceText = 'アーバイルスパシエ芝浦BAY-SIDE';
const searchText = 'エ芝浦';
const lists = [
'スパシエ',
'芝浦BAY-SIDE',
'エ芝浦',
'パシエ芝浦BAY'
];
console.log(lists.filter(item => item.includes(searchText)));
// ["エ芝浦", "パシエ芝浦BAY"]