javascript Programming Glossary: indexof

What are useful JavaScript methods that extends built-in objects?

http://stackoverflow.com/questions/1137436/what-are-useful-javascript-methods-that-extends-built-in-objects

String format trim padding replaceAll replaceAll Array indexOf Date toMidnight Note Please post one extended method per answer... javascript share improve this question Array.prototype.indexOf Array.prototype.indexOf function item for var i 0 i this.length.. this question Array.prototype.indexOf Array.prototype.indexOf function item for var i 0 i this.length i if this i item return..

Javascript: Determine whether an array contains a value

http://stackoverflow.com/questions/1181575/javascript-determine-whether-an-array-contains-a-value

arrays contains share improve this question arrValues.indexOf 'Sam' 1 IE 8 and below do not have the Array.prototype.indexOf.. 'Sam' 1 IE 8 and below do not have the Array.prototype.indexOf method. For these versions of IE use if Array.prototype.indexOf.. method. For these versions of IE use if Array.prototype.indexOf Array.prototype.indexOf function needle for var i 0 i this.length..

How to fix Array indexOf() in JavaScript for IE browsers

http://stackoverflow.com/questions/1744310/how-to-fix-array-indexof-in-javascript-for-ie-browsers

to fix Array indexOf in JavaScript for IE browsers If you have worked with JavaScript.. not implement the ECMAScript function for Array.prototype.indexOf including IE8 . Not a huge problem because you can extend the.. on your page with the following code. Array.prototype.indexOf function obj start for var i start 0 j this.length i j i if..

How can I check if one string contains another substring in JavaScript?

http://stackoverflow.com/questions/1789945/how-can-i-check-if-one-string-contains-another-substring-in-javascript

be one. javascript string share improve this question indexOf returns the position of the string in the other string. If not..

array.contains(obj) in JavaScript

http://stackoverflow.com/questions/237104/array-containsobj-in-javascript

Array which addresses finding objects in an array using indexOf . javascript arrays web browser share improve this question.. share improve this question Modern browsers have Array#indexOf which does exactly that this is in the new ish ECMAScript 5th.. _.include list value underscore's contains include uses indexOf internally if passed a JavaScript array . Some other frameworks..

Fixing javascript Array functions in Internet Explorer (indexOf, forEach, etc)

http://stackoverflow.com/questions/2790001/fixing-javascript-array-functions-in-internet-explorer-indexof-foreach-etc

javascript Array functions in Internet Explorer indexOf forEach etc As detailed elsewhere and otherwise apparently.. key functions in particular on Array such as forEach indexOf etc . There are a number of workarounds here and there but I'd.. Many use the MDC fallback implementations eg. for indexOf . They're generally rigorously standards compliant even to the..

endsWith in javascript

http://stackoverflow.com/questions/280634/endswith-in-javascript

bit String.prototype.endsWith function suffix return this.indexOf suffix this.length suffix.length 1 Doesn't create a substring.. suffix.length 1 Doesn't create a substring Uses native indexOf function for fastest results Skip unnecessary comparisons using.. Skip unnecessary comparisons using the second parameter of indexOf to skip ahead Works in Internet Explorer NO Regex complications..

Why doesn't indexOf work on an array IE8?

http://stackoverflow.com/questions/3629183/why-doesnt-indexof-work-on-an-array-ie8

doesn't indexOf work on an array IE8 The below function works fine on opera.. firefox and chrome. However in IE8 it fails on if allowed.indexOf ext 1 1 part. Does anyone know why Is there any obvious mistake.. var ext fileinput.value.toLowerCase .split '.' if allowed.indexOf ext 1 1 document.getElementById 'uploadsec' .innerHTML document.getElementById..

Test if an element contains a class?

http://stackoverflow.com/questions/5898656/test-if-an-element-contains-a-class

javascript css dom share improve this question Using indexOf is correct but you have to tweak it a little function hasClass.. hasClass element cls return ' ' element.className ' ' .indexOf ' ' cls ' ' 1 Otherwise you will also get true if the class..

Javascript StartsWith

http://stackoverflow.com/questions/646628/javascript-startswith

String.prototype.startsWith function str return this.indexOf str 0 Then you can use it directly on string values Hello World.. Harmony String Extras proposal. Edit As others noted indexOf will be inefficient for large strings its complexity is O N..

JavaScript equivalent of PHP's in_array()

http://stackoverflow.com/questions/784012/javascript-equivalent-of-phps-in-array

packages. Check out jQuery's inArray and Prototype's Array.indexOf for examples. jQuery's implementation of it is as simple as.. behavior. Alex's is the official version of Prototype's indexOf and Chris's is more like PHP's array_intersect . This does what..

Is it possible to get the non-enumerable inherited property names of an object?

http://stackoverflow.com/questions/8024149/is-it-possible-to-get-the-non-enumerable-inherited-property-names-of-an-object

curr props.forEach function prop if allProps.indexOf prop 1 allProps.push prop while curr Object.getPrototypeOf.. getAllProperties 1 2 3 0 1 2 length constructor push slice indexOf sort splice concat pop unshift shift join toString forEach reduceRight.. obj .forEach function prop if props.indexOf prop 1 props.push prop while obj Object.getPrototypeOf obj..