='b'){/** * Get the substring of a string * @param {integer} start where to start the substring * @param {integer} length how many characters to return * @return {string} */String.prototype.substr=function(substr){returnfunction(start,length){// call the original methodreturnsubstr.cal...
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. 注意:...
示例 JavaScript String substring() Methodvarstr ="Apples are round, and apples are juicy.";document.write("(1,2): "+ str.substring(1,2));document.write("(0,10): "+ str.substring(0,10));document.write("(5): "+ str.substring(5)); 输出结果: (1,2): p (0,10): Apples are ...
This JavaScript tutorial explains how to use the string method called substring() with syntax and examples. In JavaScript, substring() is a string method that is used to extract a substring from a string, given start and end positions.
该substring()方法的第二个参数是停止搜索的索引,而的第二个参数substr()是要返回的最大长度。 示例 我们来看一个JavaScript中substr()方法的示例- JavaScript String substr() Method var str = "Apples are round, and apples are juicy."; document.write("(1,2): " + str.substr(1,2)); ...
JavaScript String substring() 方法 substring()方法从两个指定索引之间的字符串中提取字符,并返回新的子字符串。此方法在“start”和“end”之间提取字符串中的字符,不包括“end”本身。如果“start”大于“end”,则此方法将交换两个参数,即str.substring(1,4)== str.substring(4,1)。如果“start”或“end”...
Here’s an another example of JavaScript SubString method varmyStr=newString("ecomputernotes");alert(myStr.substring(9));// alerts 'notes'alert(myStr.substring(0));// alerts 'ecomputernotes'alert(myStr.substring(0,9));// alerts 'ecomputer' ...
='b'){/*** Get the substring of a string* @param {integer} start where to start the substring* @param {integer} length how many characters to return* @return {string}*/String.prototype.substr=function(substr){returnfunction(start,length){// call the original methodreturnsubstr.call(this...
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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 round, and apples are juicy."; document.write("(1,2): " + str.substring(1,2)); document.write("(0,...