Find all needed information about Javascript String Indexof Browser Support. Below you can see links where you can find everything you want to know about Javascript String Indexof Browser Support.
https://www.w3schools.com/jsref/jsref_indexof.asp
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. Note: The indexOf() method is case sensitive. Tip: Also look at the lastIndexOf() method.
https://learnwebcoding.com/javascript/javascript_reference/indexOf_method_string.php
The implementation test is a simple test for the presence of web browser support, and a definitive test for the absence of web browser support. If the web browser does not recognize the JavaScript indexOf() method on strings, the testing is stopped and the implementation test reports: Fail (no support): The web browser does not recognize the ...
https://learnwebcoding.com/javascript/javascript_reference/indexOf_method_array.php
The capability test is a more definitive, albeit not an all inclusive, test for the presence of web browser support. If the web browser's implementation of the JavaScript indexOf() method on arrays includes support for the tested capability, the capability test reports: Pass (at least partial/possibly full support): The web browser recognizes ...
https://stackoverflow.com/questions/8848097/indexof-not-supported-in-ie8-browser
IndexOf not Supported in IE8 Browser. Ask Question ... The indexOf method of Arrays is not implemented in IE < 9, so I assume that's what the OP is referring to. ... The documentation for indexOf on MDN includes a pollyfill that will add support in browsers that don't support JavaScript 1.6.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/indexOf
indexOf() was added to the ECMA-262 standard in the 5th edition; as such it may not be present in all browsers. You can work around this by utilizing the following code at the beginning of your scripts. This will allow you to use indexOf() when there is still no native support.4%
https://www.w3schools.com/jsref/jsref_lastindexof.asp
Definition and Usage. The lastIndexOf() method returns the position of the last occurrence of a specified value in a string. Note: The string is searched from the end to the beginning, but returns the index starting at the beginning, at position 0. This method returns -1 if the value to search for never occurs.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/startsWith
The startsWith() method determines whether a string begins with the characters of a specified string, returning true or false as appropriate.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/includes
String.prototype.contains. In Firefox 18–39, the name of this method was contains().It was renamed to includes() in bug 1102219 due to the following reason:. It's been reported that some websites using MooTools 1.2 broke on Firefox 17. This version of MooTools checks whether String.prototype.contains() exists and, if it doesn't, MooTools adds its own function.
https://javascript.info/string
The “right” algorithm to do string comparisons is more complex than it may seem, because alphabets are different for different languages. So, the browser needs to know the language to compare. Luckily, all modern browsers (IE10- requires the additional library Intl.JS) support the …
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