I am doing some processing on these results and I need to check if the results(i.e the urls are valid for eg that the website is still there etc). Do you know of any thing which I can use in javascript to do so.
(MalformedURLException e) { return false; } catch (URISyntaxException e) { return false; } } public static void main(String[] args) throws IOException { Scanner sc = new Scanner(System.in); System.out.println("Enter an URL"); String url = sc.next(); if(isUrlValid(url)) { URL ...
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JavascriptWeb DevelopmentFront End TechnologyObject Oriented ProgrammingTo check the value for percentage, use a regular expression. When dealing with user input or processing data in JavaScript, it's important to make sure a value is a valid percentage. This article shows you how to check if a...
JavaScript Code:// Define a function 'isValidJSON' that checks if a given string 'obj' is a valid JSON const isValidJSON = obj => { // Try to parse the string as JSON try { JSON.parse(obj); // If parsing succeeds, return true return true; } catch (e) { // If parsing ...
查看更多关于checkout参数使用的命令:svn help checkout [root@ltegr ~]# svn help checkout checkout (co): Check out a working copy from a repository. usage: checkout URL[@REV]… [PATH] If specified, REV determines in which revision the URL is first looked up. ...
// Check if an element is visible on the screen (e.g. not display: none) var isInvisible = $('selector').is(':visible'); // Check if an element is a hidden element var isHidden = $('selector').is(':hidden'); If this isn't what you are looking for, would it be possib...
The best way to check if an array is empty in JavaScript is by using the Array.isArray() method (ES5+) and array's length property together like so: // ES5+ if (!Array.isArray(array) || !array.length) { /
Javascript Boolean Type Introduction Using the typeof operator, we can check the datatype of a variable. If the variable is a Boolean value, typeof will return the string 'boolean'. Copy vara =Boolean(true);varb = false;//www.java2s.comvarc ="";vard = newDate();if(typeofa ==='...
Check if mobile browser, based on useragent string. Example varmobile=require('is-mobile');console.log(mobile());// => false API mobile({ [ua], [tablet], [featureDetect] }) Returns true if a mobile browser is being used. If you don't specifyopts.uait will usenavigator.userAgent. ...