My solution breaks down in 3 parts: the state of the user is stored in a service, in the run method you watch when the route changes and you check if the user is allowed to access the requested page, in your main controller you watch if the state of the user change. You should … Read more
I have this error when I compile my code in node.js, how can I fix it? RefernceError: fetch is not defined This is the function I am doing, it is responsible for recovering information from a specific movie database.
JSON itself does not specify how dates should be represented, but JavaScript does. You should use the format emitted by Date‘s toJSON method: 2012-04-23T18:25:43.511Z Here’s why: It’s human readable but also succinct It sorts correctly It includes fractional seconds, which can help re-establish chronology It conforms to ISO 8601 ISO 8601 has been well-established internationally for more than a decade ISO 8601 is endorsed … Read more
I am trying to set up my React.js app so that it only renders if a variable I have set is true. The way my render function is set up looks like: Basically, the important portion here is the if(this.state.submitted==false) portion (I want these div elements to show up when the submitted variable is set to false). But when running this, I get … Read more
Here is the code
This works in all browsers: If you wanted to change the page without it reflecting in the browser back history, you can do:
An “undefined variable” is different from the value undefined. An undefined variable: A variable with the value undefined: When a function takes an argument, that argument is always declared even if its value is undefined, and so there won’t be any error. You are right about != null followed by !== undefined being useless, though.
If you’re just after console logging here’s what I’d do: Shouldn’t be any need for those packages just to do console logging.
Pure JS You can use fetch optionally with await-try-catch Show code snippet Old school approach – xhr Show code snippet SUMMARY In server side you can read original file name (and other info) which is automatically included to request by browser in filename formData parameter. You do NOT need to set request header Content-Type to multipart/form-data – this will be set automatically by … Read more
See the documentation on MDN about expressions and operators and statements. Basic keywords and general expressions this keyword: How does the “this” keyword work? var x = function() vs. function x() — Function declaration syntax var functionName = function() {} vs function functionName() {} (function(){…})() — IIFE (Immediately Invoked Function Expression) What is the purpose?, How is it called? Why does (function(){…})(); work but function(){…}(); doesn’t? (function(){…})(); vs (function(){…}()); shorter alternatives: !function(){…}(); – What … Read more