Javascript Check If String Contains Multiple Words

04 Jun, 2021

In this tutorial were going to discuss methods you can use to check if a JavaScript string contains another string using these three approaches. This method returns true if the string contains the characters and false if not.

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Alert String Does not contains word.

Javascript check if string contains multiple words. Var str this. Var txt txtwordval. 2 You need to know if that string is equal to one of multiple values say banana or lemon because the yellow fruits need special yellow fruit processing or something.

On the other hand if the returned value is -1 then the string doesnt contain the word. Definition and Usage The includes method determines whether a string contains the characters of a specified string. If this null throw new TypeError cant convert this to object.

Most people accomplish this by doing two string comparisons connected by a logical OR which looks like this. For that we need a method accepting the inputString and the list of the keywords. Var str Hello world welcome to the universe.

Check if word is in string javascript. String Similar to the solution that uses the Stringcontains method we can check the indices of the keywords by using the StringindexOf method. Function Multiwords s.

1 You have a string in JavaScript like var fruit. Var n strincludes world. New RegExpb myWord btestmyString.

Enclose regex alternation group into parentheses specify word boundary b to match a separate words. There are three methods for checking if a JavaScript string contains another character or sequence of characters. Count count.

If the string does not contain the given substring it returns -1. Var str Hello world welcome to the universe. Using search Using test Using match Finding a substring in a string means that the string are for example will be matched even when its found as a part of a word such as fare dare etc.

New RegExpb myWord btestmyString. Var containsVals text1text2. This is an important distinction to draw between checking for a substring within a string and checking for a word within a string.

False myWord among. Var result aindexOf b if result 0 alert Found. Our code is case sensitive.

Var removeUselessWords function txt var uselessWordsArray a at be can cant could couldnt do does how i in is many much of on or should shouldnt so. Var myWord word. To convert string to integer.

Alert String Contains Word. Var str how are you. If count Infinity throw new RangeError repeat count must be less than.

If the returned value by indexOf method is greater than -1 it means the string contains the specific word. For var i0i. We have used the if else statement to show the message on the web page.

Var b stoLowerCase. Join array items with without side spaces. If strindexOf txt -1.

Multiwords ANY. Var a flix 0toLowerCase. String indexOf Method The most common and perhaps the fastest way to check if a string contains a substring is to use the indexOf method.

Repeat function count use strict. Else alert Not Found. Var myString a long text with the desired word amongst others.

Check NaN if count count count 0. This method returns the index of the first occurrence of the substring. Javascript by Unsightly Unicorn on Apr 13 2020 Donate.

The includes method is case sensitive. If count 0 throw new RangeError repeat count must be non-negative. You can create an array and loop it.

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