if(!new RegExp(regex).test(value)){
alert('Your string was invalid.');
}
Here is what the above code is Doing:
1. The first line creates a new regular expression object.
2. The second line tests the regular expression against a string.
3. The third line alerts the user if the string was invalid.
$(“a:has(img)”).each(function() { $(this).replaceWith($(this).children()); }) Here is what the above code is Doing: 1. It’s finding all the tags that have an tag inside them. 2. It’s looping through each of those tags. 3. It’s replacing the tag with the tag.
import { registerLocaleData } from ‘@angular/common’; import localeFr from ‘@angular/common/locales/fr’; // the second parameter ‘fr’ is optional registerLocaleData(localeFr, ‘fr’); Here is what the above code is Doing: 1. Importing the registerLocaleData function from the @angular/common package. 2. Importing the French locale data from the @angular/common package. 3. Registering the locale data for the French language…
document.querySelector(‘[id^=”poll-“]’).id; Here is what the above code is Doing: 1. We’re using the `document.querySelector` method to find the first element that matches the selector `[id^=”poll-“]`. 2. We’re using the `id` property to get the id of the element. The `document.querySelector` method returns the first element that matches the selector. The `[id^=”poll-“]` selector matches any element…
var valid_part = document.getElementById(“part”); if (valid_part.checkValidity()) { alert(“Item Description contains no commas “); } else { alert(“Item Description cannot contain a comma”); } Here is what the above code is Doing: 1. It’s getting the value of the input field with the id of “part” 2. It’s checking to see if the value of the…
(.imageTags[] | contains(\”latest\”) | not) Here is what the above code is Doing: 1. We’re using the `jq` command to parse the JSON output of the `docker images` command. 2. We’re using the `select` command to filter out all images that don’t have the `latest` tag. 3. We’re using the `map` command to get the…
let myObject = { firstname: ‘harry’, lastname: ‘potter’ } //check the typeof if, boolean, object, string etc… console.log(typeof myObject); if(typeof myObject === ‘object’) { console.log(‘this is object’); } Here is what the above code is Doing: 1. We create a variable called myObject and assign it an object literal. 2. We check the type of…