indexof example

IndexOf method Returns the character position of a substring within a string object for the first time. Strobj.indexof (substring[, StartIndex]) Parameters Strobj Required option. A String object or literal. SubString Required option. The substring

String. indexof String. indexof method (char, int32, int32)The index of the first matching item of the specified character in this instance. Searches start from the specified character location and checks the specified number of character

String. indexof String. indexof method (char, int32, int32)The index of the first matching item of the specified character in this instance. Searches start from the specified character location and checks the specified number of character locations.

Jsjavascript checks whether a String contains a certain String. If you are interested in using the String object to find Sub-characters and indexOf, you can refer to the following to determine the specified directory to display ads. The Code is as

Jsjavascript checks whether a String contains a certain String. If you are interested in using the String object to find Sub-characters and indexOf, you can refer to the following to determine the specified directory to display

Example of getting started with the JavaScript indexOf method (calculate the position where the specified character first appears in the string), javascriptindexof JavaScript indexOf Method The indexOf method is used to calculate the position where

Array does not have the indexOf method, which makes it troublesome to search for the index of an element in an Array. Therefore, Array is extended through prototype. prototype. indexOf (), but there is a problem when traversing the Array. The Array

Use of the indexOf method String type in the JavaScript Array Let's take a look at the well-known string usage. let str = 'orange'; str.indexOf('o'); //0 str.indexOf('n'); //3 str.indexOf('c'); //-1 Here 0 and 3 are the positions where o and n

ArticleDirectory Syntax Description Instance Reprinted ...... String. indexof method (value, [startindex], [count]) The index of the first matching item of the specified character in this instance. Searches start

Returns the first occurrence of a substring in a String object. Public indexOf (value: String, [startIndex: Number]): NumberSearch for the string, and return the position of the first matching item of the value found at or after the startIndex