What does the regex \S mean in JavaScript?
What does /\S/ mean in a regex?
javascript
How to do a redirect to another route with react-router?
For the simple answer, you can use Link component from react-router, instead of button. There is ways to change the route in JS, but seems you don’t need that here. To do it programmatically in 1.0.x, you do like this, inside your clickHandler function: this.history.pushState(null, ‘login’); Taken from upgrade doc here You should have this.history … Read more
(Google Map API) Geocode was not successful for the following reason: REQUEST_DENIED
First of all, the problem was loading the scripts as async, remove it.. try that jsfiddle with your API KEY
How do I get the current date in JavaScript?
Use new Date() to generate a new Date object containing the current date and time. Expand snippet This will give you today’s date in the format of mm/dd/yyyy. Simply change today = mm +’/’+ dd +’/’+ yyyy; to whatever format you wish.
Cannot read property ‘push’ of undefined when combining arrays
You get the error because order[1] is undefined. That error message means that somewhere in your code, an attempt is being made to access a property with some name (here it’s “push”), but instead of an object, the base for the reference is actually undefined. Thus, to find the problem, you’d look for code that … Read more
JQuery – $ is not defined
That error can only be caused by one of three things: Your JavaScript file is not being properly loaded into your page You have a botched version of jQuery. This could happen because someone edited the core file, or a plugin may have overwritten the $ variable. You have JavaScript running before the page is … Read more
Getting a UnhandledPromiseRejectionWarning when testing using mocha/chai
The issue is caused by this: If the assertion fails, it will throw an error. This error will cause done() never to get called, because the code errored out before it. That’s what causes the timeout. The “Unhandled promise rejection” is also caused by the failed assertion, because if an error is thrown in a … Read more
How to make history.back() without getting a warning on the browser to reload the page?
I need to create a “Back” button, so for that I used: It works fine when I run it locally, but when I deploy it to the server when I click on the button I get a message on the browser: Confirm Form ResubmissionThis webpage requires data that you entered earlier in order to be … Read more
How do you check that a number is NaN in JavaScript?
Try this code: For checking whether any value is NaN, instead of just numbers, see here: How do you test for NaN in Javascript?
How can I check for “undefined” in JavaScript?
If you are interested in finding out whether a variable has been declared regardless of its value, then using the in operator is the safest way to go. Consider this example: But this may not be the intended result for some cases, since the variable or property was declared but just not initialized. Use the … Read more