You have to use bracket notation: var obj = {}; obj[a[i]] = 0; x.push(obj); The result will be: x = [{left: 0}, {top: 0}]; Maybe instead of an array of objects, you just want one object with two properties: var x = {}; and x[a[i]] = 0; This will result in x = {left: 0, … Read more
getElementsByClassName returns a collection (list) of elements (will therefore not have a innerHTML property) You could try document.querySelector(“.cl1 .sl_price”) instead (takes a css selector and returns the first match) read more at https://developer.mozilla.org/en-US/docs/Web/API/Document.querySelector The end result would then be something like this; document.querySelector(‘.cl1 .sl_price’).innerHTML = “from only £00.00<br>”; Note: I am assuming you only wanted … Read more
Your code is working just fine, you have to declare javscript method before DOM ready.
You can take Array.map(). This method returns an array with the elements from the callback returned. It expect that all elements return something. If not set, undefined will be returned. var students = [{ name: ‘Nick’, achievements: 158, points: 14730 }, { name: ‘Jordan’, achievements: ‘175’, points: ‘16375’ }, { name: ‘Ramon’, achievements: ’55’, points: … Read more
The error comes from the bcrypt.hash method. In your case, you have the following piece of code : bcrypt.hash(newUser.password, salt , (err, hash) => { … } I think that your problem comes from the newUser.password that must be empty (null or undefined). The error says data and salt arguments required. It looks like your … Read more
In javascript functions can be overwritten. You can simply assign it a new purpose: window.onbeforeunload = function () { // blank function do nothing } This will completely overwrite the existing version of window.onbeforeunload. Note: Why don’t you simply remove the line of code that sets this function in the first place? Or if you … Read more
If you’re sure your connection string is already well-formed like the one gnerkus described, the last thing you need to check is your password. If it’s contain non alphanumeric characters, maybe that’s the one who cause the issue. It seems either the Node.js or the way javascript work itself causing this (I’m not really sure … Read more
Basic console.log will not go through long and complex object, and may decide to just print [Object] instead. A good way to prevent that in node.js is to use util.inspect: ‘use strict’; const util = require(‘util’), obj = /*Long and complex object*/; console.log(util.inspect(obj, {depth: null})); //depth: null tell util.inspect to open everything until it get … Read more
function test() { return new Promise((resolve, reject) => { return reject(‘rejected’) }) } test().then(function() { //here when you resolve }) .catch(function(rej) { //here when you reject the promise console.log(rej); });
Use globalAlpha but make sure that you set it before drawing the image: ctx.globalAlpha = 0.4;