StringBuffer insert(int index,char ch) StringBuffer insert(int index,Object obj) index指定将字符串插入到StringBuffer对象中的位置的下标。 (8)、reverse() 颠倒StringBuffer对象中的字符 StringBuffer reverse() (9)、delete()和deleteCharAt() 删除字符 StringBuffer delete(int startIndex,int endIndex) Stri...
常用JavaScript字符串方法简述 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 enter code herevarst...
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 ...
if(string.substring(i, i + oldChars.length) == oldChars) { string = string.substring(0, i) + newChars + string.substring(i + oldChars.length, string.length); } }returnstring; }conststring ="Java Tutorials";letnewString = replaceString("Java","JavaScript", string);console.log(newStr...
There are 3 methods for extracting a part of a string: slice(start,end) substring(start,end) substr(start,length) JavaScript String slice() slice()extracts a part of a string and returns the extracted part in a new string. The method takes 2 parameters: start position, and end position ...
JavaScript String Methods MethodDescription charAt() Returns the character at the specified index. concat() Joins two or more strings. replace() Replace a string with another string. split() Converts the string to an array of strings. substr() Returns a part of a string by taking the starti...
String LengthThe length property returns the length of a string:Example var txt = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";var sln = txt.length; Try it Yourself » Finding a String in a StringThe indexOf() method returns the index of (the position of) the first occurrence of a specified text in ...
The split() Method The slice() Method The substring() Method Syntax string.substr(start, length) Parameters Parameter Description start Required.The start position.First character is at index 0. If start is greater than the length, substr() returns "".If start is negative, substr() counts ...
方法(method)是通过对象调用的javascript函数。也就是说,方法也是函数,只是比较特殊的函数。假设有一个函数是fn,一个对象是obj,那么就可以定义一个method: 函数是一段代码,通过名字来进行调用。它能将一些数据(参数)传递进去进行处理,然后返回一些数据(返回值),也可以没有返回值。所有传递给函数的数据都是显式传递...
Table of Contents .indexOf .length .charAt() .toUpperCase() .slice() .replace .indexOf If you are looking to find a certain character or set of characters in a string you can use the .indexOf method to return the position of the character in integer format. For example var myName...