How to make function in function like a.b.c() [closed] - javascript

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I want to make subfunction like a.b.c(), I can't find name for this. Sorry for english.

What you are describing is just a function within an object, within another object, like so:
const a = {
b: {
c: () => "hello World",
},
};

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How to get every element in an array in an if statement js [closed]

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So I’m trying to check names through an array and I don’t want to have to use
if (<array name>[0,1,2,3,4,5,6,7])
{ code in here }
depend on what you are trying to do u can use forEach or map
let arr = [1,2,3,4,5,6,7,8,9,10];
arr.forEach((item)=>{
console.log(`${item} is greater than 5 : ${item>5}`)
})

Angular can't bind to variable [closed]

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I have this declared in my class:
somePair: KVPair;
Where KVPair is just a key value pair JSON.
Then in my displayFN I set it like so:
displayFn(pair: KVPair) {
this.somePair = pair;
}
But when I console.log(somePair) outside of displayFn, it's undefined, and I'm not sure why.
I was trying to set it with a [displayWith] which was clearing somePair.
When I set it in (optionSelected)="someFunction($event.option.value)", the value stuck around.

Change variable name from function [closed]

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I was wondering if it is possible to change the name of a variable from a function paramater
eg.
function(name, content) {
var name = content;
alert(name);
}
No it's not possible. The closest you can get to that is to rename an object property like:
var something = { name: 'me' };
console.log('something', something);
something.content = something.name;
delete something.name;
console.log('something', something);
or as a function:
const rename = (something, oldPropertyName, newPropertyName) => {
something[newPropertyName] = something[oldPropertyName];
delete something[oldPropertyName];
};

Change the selector of a function in jquery [closed]

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I need some help. See if you can help me out.
I have a function whose form is:
$this.find(settings.selector).each(function(index) {
Anyway, depending on a variable can change the selector as follows:
$this.each(function(index) {
Can you give me some idea how to do it? I hope I have explained roughly.
Thank you.
You can use a temp variable like
var $els;
if (some_condition) {
$els = $this.find(settings.selector)
} else {
$els = $this;
}
$els.each(function (index) {});

regular expression in javascript checking for "asdasd<something>asdsada" [closed]

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how would I check for string
<something> in var string = "some chars <something> somechars"
You can use String.match():
var res = string.match(/<something>/g); // ["<something>"]
If there is no match, the value of res will be null. See example on JSFiddle.

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