The following code shows how to join array elements together with string separator. Example <!--from www. j av a 2 s . c o m--> <!DOCTYPE html> Example var colors = ["red", "green", "blue"]; document.writeln(colors.join(",")); //red,green,blue document...
var reverseEntireSentence = reverseBySeparator(string, ""); // Output becomes emocleW ot siht tpircsavaJ !ediuG var reverseEachWord = reverseBySeparator(reverseEntireSentence, " "); function reverseBySeparator(string, separator) { return string.split(separator).reverse().join(separator); } 乱...
join: join two strings using exactly one separator functionjoin(part1:string,separator:string,part2:string):string Joins the two parts using exactly one separator. If a separator is present at the end ofpart1or the beginning ofpart2, it is removed, then the two parts are joined usingseparat...
如果str中存在一个或多个regex的匹配项,则.match()返回一个数组。如果没有匹配项,它不幸地返回null(而不是空数组)。我们通过??运算符来修复这个问题。 我们也可以使用可选链: returnmatchResult?.length??0; 14.4.2 示例:为属性指定默认值 functiongetTitle(fileDesc) {returnfileDesc.title??'(Untitled)'; ...
function reverseBySeparator(string, separator) { return string.split(separator).reverse().join(separator); } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15、乱序同字母字符串 给定两个字符串,判断是否颠倒字母而成的字符串,譬如Mary与Army就是同字母而顺序颠倒: ...
function reverseBySeparator(string, separator) {return string.split(separator).reverse().join(separator);} 15、乱序同字母字符串 给定两个字符串,判断是否颠倒字母而成的字符串,譬如Mary与Army就是同字母而顺序颠倒: var firstWord = "Mary";var secondWord ...
In the above example, an array containing two strings is created. Constructor You can also use the Array constructor to create an array. You canArray()constructor to create an array with the length of the incoming value; you can also pass the elements to be saved to the Array constructor ...
return anything; otherwise it returns either the two-character string "\r\n" (carriage-return followed by newline), or one of the one-character strings "\n" (newline), "\r" (carriage-return), "\u2028" (Unicode character LINE SEPARATOR), "\u2029" (Unicode character PARAGRAPH SEPARATOR...
Master splitting strings in JavaScript effortlessly! Dive into our guide to learn how to divide strings into substrings using the split method.
<!DOCTYPE html> JavaScript Array Methods join() The join() method joins array elements into a string. It this example we have used " * " as a separator between the elements: const fruits = ["Banana", "Orange", "Apple", "Mango"]; document.getElementById("demo").innerHTML = f...