Recommended (reduce with default value) Array.prototype.reduce can be used to iterate through the array, adding the current element value to the sum of the previous element values. Run code snippetExpand snippet Without default value You get a TypeError Run code snippetExpand snippet Prior to ES6’s arrow functions Run code snippetExpand snippet Non-number inputs If non-numbers are … Read more
You don’t need to use arrays. JSON values can be arrays, objects, or primitives (numbers or strings). You can write JSON like this: You can use it like this:
Modern jQuery Use .prop(): DOM API If you’re working with just one element, you can always just access the underlying HTMLInputElement and modify its .checked property: The benefit to using the .prop() and .attr() methods instead of this is that they will operate on all matched elements. jQuery 1.5.x and below The .prop() method is not available, so you need to use .attr(). Note that this is the … Read more
There’s an easier way that doesn’t require you to go into the options tag: Check out the this jQuery method. NOTE: The above code does not trigger the change event. You need to call it like this for full compatibility:
A selector to get the middle option-element by value is For an index: For a known text: EDIT: As commented above the OP might have been after changing the selected item of the dropdown. In version 1.6 and higher the prop() method is recommended: In older versions: EDIT2: after Ryan’s comment. A match on “Selection … Read more
Objects, {} in JavaScript do not have the method .map(). It’s only for Arrays, []. So in order for your code to work change data.map() to data.products.map() since products is an array which you can iterate upon.
This HTML is fine: You need to initialize the Dialog (not sure if you are doing this):
Use location.reload(): The reload() function takes an optional parameter that can be set to true to force a reload from the server rather than the cache. The parameter defaults to false, so by default the page may reload from the browser’s cache.
speedtest.net is run by Ookla and their Speed Test application. Unfortunately they don’t provide any public APIs for speedtest.net which you could use. Although I doubt either of these meet your needs, they do provide Speed Test Mini and a hosted reporting solution for their full Speed Test software package (which includes CSV exporting capabilities). The reason you’re unable to … Read more
You can add attributes using attr like so: However, for DOM properties like checked, disabled and readonly, the proper way to do this (as of JQuery 1.6) is to use prop.