javascript string find substring
,String#indexOf(). In an ES5 or older environments, String.prototype.indexOf returns the index of a substring (or -1 if not found): var string = "foo", substring = "oo"; ...
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 javascript string find substring 相關參考資料
5 ways to check if a string contains a substring in JavaScript - Medium
I've tested them for speed in Chrome on a MacBook Pro, and it appears ES6 .includes() is the fastest, and .match() is the slowest, with all the ... https://medium.com How to check if a string contains a substring in JavaScript - Flavio Copes
https://flaviocopes.com How to check whether a string contains a substring in JavaScript ...
String#indexOf(). In an ES5 or older environments, String.prototype.indexOf returns the index of a substring (or -1 if not found): var string = "foo", substring = "oo"; ... https://stackoverflow.com JavaScript String includes() Method - W3Schools
The includes() method determines whether a string contains the characters of a ... This method returns true if the string contains the characters, and false if not. https://www.w3schools.com JavaScript String indexOf() Method - W3Schools
The indexOf() method returns the position of the first occurrence of a specified value in a string. This method returns -1 if the value to search for never occurs. https://www.w3schools.com JavaScript String match() Method - W3Schools
var str = "The rain in SPAIN stays mainly in the plain"; ... The match() method searches a string for a match against a regular expression, and returns the matches, ... https://www.w3schools.com JavaScript String search() Method - W3Schools
More "Try it Yourself" examples below. Definition and Usage. The search() method searches a string for a specified value, and returns the position of the match. https://www.w3schools.com JavaScript String substring() Method - W3Schools
Parameter, Description. start, Required. The position where to start the extraction. First character is at index 0. end, Optional. The position (up to, but not ... https://www.w3schools.com String.prototype.indexOf() - JavaScript | MDN
The indexOf() method returns the index within the calling String object of the first occurrence of the specified value, starting the search at ... https://developer.mozilla.org 更簡單的方式將indexOf 當作contains 使用 - Js Tips
JavaScript 預設沒有contain 的方法。如果要檢查字串或是 ... 更簡單的方式將indexOf 當作contains 使用 ... String.prototype.includes(). ES6 提供 ... http://www.jstips.co |