如果我们必须经常只拆分第一次出现的字符串,请定义一个可重用的函数。 functionsplitFirstOccurrence(str, separator){const[first, ...rest] = str.split(separator);constremainder = rest.join('-');return{first, remainder}; }constresult =splitFirstOccurrence('fql-jiyik-com','-');console.log(result)...
22 split() Splits a String object into an array of strings by separating the string into substrings. 23 substr() Returns the characters in a string beginning at the specified location through the specified number of characters. 24 substring() Returns the characters in a string between two ind...
To split hairs, the "parameter" is the name of the formal parameter, x or y in the example above, it's a static term in the function source text. The "argument" is the value that gets passed in, a dynamic run-time thing, a or b in the code above. When a function is run, ...
split(separatorString, limitNumber) Splits a String into an array of strings by separating the string into substrings based on specified separator. Regular expression can also be used as separator. substr(start, length) Returns the characters in a string from specified starting position through ...
split()Splits a string into an array of substrings startsWith()Checks whether a string begins with specified characters substr()Extracts a number of characters from a string, from a start index (position) substring()Extracts characters from a string, between two specified indices (positions) ...
join("-").split("-"); console.log(out);在本例中,将从数组ary中删除所有的4个。但是,需要注意的是,任何包含字符"-"的数组都会导致本例出现问题。简而言之,它将导致join("-")函数不正确地将字符串拼合在一起。在这种情况下,上面截图中的所有"-"字符串都可以替换为原始数组中不使用的任何字符串。下面...
split(','); var i = codes.length; while (i--) { if (codes.indexOf(codes[i]) != i) { codes.splice(i,1); } }我刚刚想出了一个简单的方法,用一个数组过滤器来实现这一点。12345678 var list = [9, 9, 111, 2, 3, 4, 4, 5, 7]; // Filter 1: to find all duplicates ...
()Join two arrays - concat()Join three arrays - concat()Add an element to position 2 in an array - splice()Convert an array to a string - toString()Add new elements to the beginning of an array - unshift()Remove the first element of an array - shift()Select elements from an array...
You can use string method split (separate) to split the string into an array. The parameter separate is the delimiter for division. for example: var str1="I love FR";var str2=str1.split(" ");alert(str2); str2 will be stored as a string array, and the value of each element is...
Split a string into an array - split() Strings explainedJavaScript NumbersNumber are considered accurate only up to 15 digits Floating point arithmetic is not always 100% accurate But it helps to multiply and divide by 10 Constants, preceded by 0x, are interpreted as hexadecimal The toString()...