How to check in javascript if a list contains any element? [closed] - javascript

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How to check if a list is not empty?
if (serialNumbersList.Any()) //c# expression equivalent
{
// do stuff
}

In javascript there are no lists but arrays, and you can check their length property
if(serialNumberList.length > 0) {
// Do your stuff
}

Related

Way to change function from include to strict comparison? [closed]

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How change this to strict comprassion ==?
if (this.Name) {
conditions.push(this.filterName);
}
filterName(item) {
return item.name.toString().includes(this.Name);
}
just compare two names
filterName(item) {
return item.name.toString() === this.Name;
}

How to iterate and append characters of an array by push [closed]

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var charArray=[a,b,c]
I want to have a new array as following:
var charArrayNew=[a, ab, abc]
Please suggest how to get the result of charArrayNew in ES6 Javascript.
You could do this:
const charArray=['a','b','c'];
const answer = charArray.map((_,i,ar)=>ar.slice(0,i+1).join(""));
console.log(answer);
// or, alternatively:
fn=(ar,res=[])=>(
ar.reduce((a,c)=>(res.push(a+=c),a),""),res );
console.log(fn(charArray))

How to declare int array in Vue.JS? [closed]

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I am trying to declare an integer Array but don't know how to do this. Is it possible to declare a int array in Vue.
In your script , just add this below :
data(){
return {
your_array : [1,2,3,4,5,6]
}
}
your_array is just an example, the variable name can be any anything.

How to pass index value and get name from array response angular [closed]

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onRowClick function, i am getting index id.
Try this below :
onRowClick($event) {
const indexid= $event;
this.tagPolicesArray['records'].map(function(item, index){
if(index == indexid){
console.log(item['name']); ----------------> Here you will get your required name
}
});
}

Formatting String with pattern [closed]

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I have a String variable who represent date
console.log(goDate); --> "23/12/2014"
how I could turn this variable like this..?:
console.log(goDate); --> "2014-12-23".
var goDate = "23/12/2014"; // needs 2014-12-23
var newGoDate = goDate.split('/').reverse().join('-');

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