SyntaxError: Use of const in strict mode
I’m working with node.js, and in one of my js files I’m using const in “strict mode”. When trying to run it, I’m getting an error: What is the best practice to do this? Edit:
javascript
Convert array to JSON
Script for backward-compatibility: https://github.com/douglascrockford/JSON-js/blob/master/json2.js And call: Note: The JSON object is now part of most modern web browsers (IE 8 & above). See caniuse for full listing. Credit goes to: @Spudley for his comment below
Object Dump JavaScript
Firebug + console.log(myObjectInstance)
Reload an iframe with jQuery
If the iframe was not on a different domain, you could do something like this: But since the iframe is on a different domain, you will be denied access to the iframe’s contentDocument property by the same-origin policy. But you can hackishly force the cross-domain iframe to reload if your code is running on the iframe’s parent page, … Read more
JavaScript by reference vs. by value
My understanding is that this is actually very simple: Javascript is always pass by value, but when a variable refers to an object (including arrays), the “value” is a reference to the object. Changing the value of a variable never changes the underlying primitive or object, it just points the variable to a new primitive or object. However, changing … Read more
Get class list for element with jQuery
You can use document.getElementById(‘divId’).className.split(/\s+/); to get you an array of class names. Then you can iterate and find the one you want. jQuery does not really help you here…
Changing the image source using jQuery
You can use jQuery’s attr() function. For example, if your img tag has an id attribute of ‘my_image’, you would do this: Then you can change the src of your image with jQuery like this: To attach this to a click event, you could write: To rotate the image, you could do this:
Maximum call stack size exceeded on npm install
I’m trying to run npm install, this is output from console: and this is content of npm-debug.log: Removed node_modules several times and tried to reinstall. Can’t understand what’s the reason that causes this and how to fix it.
setInterval with loop time
Use a counter which increments each time the callback gets executed, and when it reaches your desired number of executions, use clearInterval() to kill the timer:
Angular 4 setTimeout() with variable delay and wait
You can use IIFE (Immediately Invoked Function Expression) and function recursion instead. Like this: Live fiddle here.