The split() Method The substr() Method The substring() Method Syntax string.slice(start,end) Parameters ParameterDescription startRequired. The start position. (First character is 0). endOptional. The end posit
endSlice− 结束提取的基于零的索引。如果省略,slice 将提取到字符串的末尾。 返回值 如果成功,则 slice 返回字符串中正则表达式的索引。否则,它返回 -1。 示例 尝试以下示例。 JavaScript String slice() Methodvar str = "Apples are round, and apples are juicy."; var sliced = str.slice(3, -2); ...
注意：作为⼀个负指数，endSlice表⽰从字符串末尾的偏移。string.slice(2，-1)提取第⼆到最后⼀个字符，字符串的第三个字符。返回值:如果成功的话，切⽚返回字符串内的正则表达式的索引。否则，返回-1。例⼦：JavaScript String slice() Methodvar str = "Apples are round, and apples are juicy....
String.prototype.ByteLength=function() { return this.replace(/[^\x00-\xff]/g,"aa").length; } // 从左截取指定长度的字串 String.prototype.left = function(n){ return this.slice(0,n); } // 从右截取指定长度的字串 String.prototype.right = function(n){ return this.slice(this.length-n)...
The slice() method is used to extract a section of a string and returns a new string.VersionImplemented in JavaScript 1.0 Syntaxslice(start_pos, end_pos)Parameterstart_pos: The position in the string where to begin extraction. end_pos: The position in the string where to end the slice ...
There are 3 methods for extracting a part of a string: slice(start, end) substring(start, end) substr(start, length) The slice() Method slice()extracts a part of a string and returns the extracted part in a new string. The method takes 2 parameters: the starting index (position), and...
Thesubstring()method does not change the original string. If start is greater than end, arguments are swapped: (4, 1) = (1, 4). Start or end values less than 0, are treated as 0. See Also: The split() Method The slice() Method ...
// slice the substring from index 0 to 10 let result = message.slice(0, 10); console.log(result); // Output: JavaScript Run Code slice() Syntax The syntax of the slice() method is: str.slice(beginIndex, endIndex) Here, str is a string. slice() Parameters The slice() method tak...
网址来源:http://www.html-js.com/article/JS-rookie-in-the-rookie-to-start-learning-to-fly-the-commonly-used-string-method-in-JavaScript indexOf(str)返回字符串中参数字符串第一次出现的位置(从左到右搜索,并且下表从0开始)。如果没有匹配项,返回-1 ...
Here,stris a string. substring() Parameters Thesubstring()method takes in: indexStart- The index of the first character to start including in the returned substring. indexEnd(optional) - The index before which to stop extraction. (Exclusive) If omitted, it extracts till the end of the strin...