// Check that current character is number. varc = s.charAt(i); if(((c <"0") || (c >"9")))returnfalse; } // All characters are numbers. returntrue; } functionstripCharsInBag(s, bag){ vari; varreturnString =""; // Search through string's characters one by one. // If ch...
How to Validate a Date in JavaScript I wrotea bookin which I share everything I know about how to become a better, more efficient programmer. You can use the search field on myHome Pageto filter through all of my articles. ShareShareShareShareShare ...
"MacIntel"); if (isMac) return "Mac; var bIsIpad = sUserAgent.match(/ipad/i) == ""; if (bIsIpad) return "iPad"; varisUnix = (navigator.platform == "X11) && !isWin && !isMac; if (isUnix) return"Unix"; var isLinux = (String(navigator.platform).indexOf("Linux") > ...
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vartoday =newDate(); today // "Tue Dec 01 2015 09:34:43 GMT+0800 (CST)" // 等同于 today.toString() // "Tue Dec 01 2015 09:34:43 GMT+0800 (CST)" 上面代码中,today是Date的实例,直接求值等同于调用toString方法。 作为构造函数时,Date对...
// Define a JavaScript function called is_weekend with parameter date1 var is_weekend = function(date1){ // Create a new Date object by parsing the provided date string var dt = new Date(date1); // Check if the day of the week is Saturday (6) or Sunday (0) if(dt.getDay() =...
toJSON()Returns the date as a string, formatted as a JSON date toLocaleDateString()Returns the date portion of a Date object as a string, using locale conventions toLocaleTimeString()Returns the time portion of a Date object as a string, using locale conventions ...
0)},S.isArray=Array.isArray,S.parseJSON=JSON.parse,S.nodeName=A,S.isFunction=m,S.isWindow=x,S.camelCase=X,S.type=w,S.now=Date.now,S.isNumeric=function(e){var t=S.type(e);return("number"===t||"string"===t)&&!isNaN(e-parseFloat(e))},S.trim=function(e){return null==...
Use Date.prototype.getMonth() to check if the month is equal to 1. JavaScript Code: // Define an arrow function to check if a given year is a leap yearconstis_leapyear=year=>newDate(year,1,29).getMonth()===1;// Test the function with various years and log the results to the co...
In JavaScript, there is no built-in function to check if every character in a given string is in uppercase format or not. So, we have to implement our function. Here, we will create a function calledisUpperCase(), an anonymous arrow function, to tell us whether all the characters in a...