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...
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 from the end of the...
string.substring(indexA, [indexB]) 1. indexA - 是一个介于0和小于字符串长度之间的整数。 indexB - (可选)介于0和字符串长度之间的整数。 substring() - 返回值 substring方法根据给定的参数返回新的子字符串。 substring() - 示例 JavaScript String substring() Method var str="Apples are rou...
第二种是:String substring(int startIndex,int endIndex) 13、concat() 连接两个字符串 14 、replace() 替换 它有两种形式,第一种形式用一个字符在调用字符串中所有出现某个字符的地方进行替换,形式如下: String replace(char original,char replacement) ...
The substring() method extracts the characters in a string between two specified indices. substring()方法用于取出字符串中特定位置间的字符 Syntax 语法 stringObject.substring(start,stop) Tips and Notes 注意 Note:To extract characters from the end of the string, use a negative start number. ...
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...
var tempWrapStr = new String(str)for(...){tempWrapStr.method()}这样可以节约 n 次装箱操作，...
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 类 Attribute and method anchor() 创建一个标签的实例,将其name属性设置为被传递给此方法的字符串 big() 将字符串转换为标签的一个实例 blink() 将字符串转换为<blink>标签的一个实例 bold() 将字符串转换为<bold>标签的一个实例 charAt() 返回...