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Jul 6, 2009 · The following script is getting the value of the selected option and putting it in text box 1. <script>. function run() {. document.getElementById("srt").value = document.getElementById("Ultra").value; } </script>. The following script is getting a value from a text box 2 and alerting with its value. <script>.
Jun 22, 2009 · function capitalizeFirstLetter(val) {. return String(val).charAt(0).toUpperCase() + String(val).slice(1); } Some other answers modify String.prototype (this answer used to as well), but I would advise against this now due to maintainability (hard to find out where the function is being added to the prototype and could cause conflicts if other ...
Dec 11, 2008 · Reference: JavaScript Tutorial: Comparison Operators. The == operator will compare for equality after doing any necessary type conversions. The === operator will not do the conversion, so if two values are not the same type === will simply return false. Both are equally quick.
43. Check JavaScript Cookies on W3Schools.com for setting and getting cookie values via JS. Just use the setCookie and getCookie methods mentioned there. So, the code will look something like: <script>. function setCookie(c_name, value, exdays) {. var exdate = new Date(); exdate.setDate(exdate.getDate() + exdays);
Mar 17, 2012 · Absolutely! There is a project called Summer of Goto that allows you use JavaScript at its fullest potential and will revolutionize the way you can write your code. This JavaScript preprocessing tool allows you to create a label and then goto it using this syntax: [lbl] <label-name>. goto <label-name>.
Feb 25, 2009 · In the context of browser, Javascript can READ user-specified file. See Eric Bidelman's blog for detail about reading file using File API. However, it is not possible for browser-based Javascript to WRITE the file system of local computer without disabling some security settings because it is regarded as a security threat for any website to change your local file system arbitrarily.
The Javascript reload() method is used to reload the current document or URL. The javascript location.reload(true) method work just like reload button in your browser. By default, the JS reload() method reloads the page from the cache, however you may force it to reload the page from the server side by setting the forceGet parameter to true ...
Feb 19, 2009 · the simplest answer is, assuming the need is to add 1 day to the current date: var currentDate = new Date(); var numberOfDayToAdd = 1; currentDate.setDate(currentDate.getDate() + numberOfDayToAdd ); To explain to you, line by line, what this code does: Create the current date variable named currentDate.
Jun 2, 2011 · That is OK if n is with certain parameters, but fails for many scenarios. So I set out to create robust functions that deliver correct results for as many scenarios as I could, so that only integers within the limits of javascript numbers are tested, everything else returns false (including + and - infinity). Note that zero is even.
Jun 4, 2009 · Since 2009 when this question was asked, JavaScript has evolved significantly. All other answers are now obsolete or overly complicated. Here is the current best practice: function sleep(ms) {. return new Promise(resolve => setTimeout(resolve, ms)); } Or as a one-liner: await new Promise(r => setTimeout(r, 2000));
