317 questions
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- 3 votes1 answers152 views
Emulate class private members in JS
I want to export a class but don't want the user to see internal properties. In other words I want to have private members like it is called in other programming ...
- 1 votes1 answers7 views
What is the scope of variables in JavaScript?
What is the scope of variables in javascript? Do they have the same scope inside as opposed to outside a function? Or does it even matter? Also, where are the variables ...
- 0 votes1 answers0 views
How to set DOM element as the first child?
I have element E and I'm appending some elements to it. All of a sudden, I find out that the next element should be the first child of E. What's the trick, how to ...
- 0 votes1 answers1 views
Difference between innerText and innerHTML
What is the difference between innerHTML, innerText and childNodes[].value in JavaScript?
- 0 votes1 answers0 views
What is the difference between children and childNodes in JavaScript?
I have found myself using JavaScript and I ran across childNodes and children properties. I am wondering what the difference between them is. Also is one preferred ...
- 1 votes2 answers108 views
What's the difference between using “let” and “var”?
What are the differences? When should let be used over var?
- 0 votes1 answers10 views
Why does 0.8 + 0.4 not equal 1.2
Been coding in javascript and came across a weird bug. I got passed values of 0.8 and 0.4 and when I added them together I got 1.2000000000000002 You can replicate ...
- 3 votes1 answers92 views
How to replace bower
I know that bower javascript packega manager is depricated, I want to replace bower to yarn.
- 0 votes0 answers15 views
Javascript code for automation perfomace test
$.ajaxSetup({ headers: { 'X-CSRF-TOKEN': $('meta[name="csrf-token"]').attr('content') } }); var url = 'http://127.0.0.1:8000/admin/register'; ...
- 0 votes0 answers7 views
"Autobahn not connected" javascript error
After symfony version change to 3.4 websocket stop working, it throw Autobahn error when I try to send any data for example session.call("app_gos/message", data);
- 2 votes1 answers25 views
Catch all errors in javascript
I want catch all javascript errors even if error not in try catch block
- 1 votes1 answers54 views
getting values and keys in separate arrays sorted by values
Suppose I have an object {'a':20,'b':6,'c':21,'d':12} After getting sort by values in descending order, The desired output : Keys: ['c','a','d','b'] and Values: ...
- 1 votes1 answers41 views
Looping through the object properties except some of them?
I have an object and want to loop through its properties except for name property: let user = { name: 'Marc', lastname: 'Gravell', age: 25 }; for(let ...
- 2 votes1 answers92 views
How to setting exact 1 second delay after every alert with setInterval
How to setting exact 1 second delay after every alert with setInterval. For example let current = 1; let timerId = setInterval(function(to) { alert(current); ...
- 1 votes3 answers48 views
how to filter unique array members ?
how to create a function that should return an array with unique items of arr. For instance: let strings = ["Hare", "Krishna", "Hare", "Krishna", "Krishna", "Krishna", ...
- 3 votes2 answers34 views
Spread Operator in Javascript
How to concat 2 arrays using spred operator? let arr = [1,2,3]; let arr2 = [4,5];
- 4 votes1 answers14 views
how to extract array data only having multiple value in Javascript?
i have this array data. var arr = {key1:'progress',key2:'done',key3:['new','12'],key4:['checking','10']}; and i want extract array data,but it should only having ...
- 3 votes1 answers33 views
how to convert nested object?
What is best way to convert ... ? const obj = { A: { B: [0, 0, 0, 0] }, D: { B: [0, 0, 0, 0], C: [0, 0, 0, 0] } } to const obj = { "A - B": [0, 0, ...
- 3 votes1 answers38 views
How to get the numbers in a interval with JavaScript?
I am looking for a way to get, using JavaScript, the numbers in a interval. For example, I could want to know what numbers are between 1-3, 4-8 or 12-15. Can I do ...
- 1 votes1 answers8 views
How can I reverse a list in JavaScript?
How can I do following [10,20,30]->[30,20,10]?
