How to search for a string inside an array of strings

Question

After searching for an answer in other posts, I felt I have to ask this. I looked at How do I check if an array includes an object in JavaScript? and Best way to find if an item is in a JavaScript array? and couldn't get the code there to work.

I am capturing an html embed code into an array, so each item is a line of html code.

for example:

i[0]='<param name=\"bgcolor\" value=\"#FFFFFF\" />' i[1]='<param name=\"width" value=\"640\" />' i[2]='<param name=\"height\" value=\"360\" />'    i[3]='more html code'  

I want to search this array and find the line where the word 'height' is.

So ideally, I'd like to write a function that returns the index of the item where 'height' appears.

Fortunately, there are no duplicates in this array, so there's only one occurrence.

with simple object search I get 'false' returns.

Any idea?

Answer 1

It's as simple as iterating the array and looking for the regexp

function searchStringInArray (str, strArray) {     for (var j=0; j<strArray.length; j++) {         if (strArray[j].match(str)) return j;     }     return -1; } 

Edit - make str as an argument to function.

Answer 2

You can use Array.prototype.find function in javascript. Array find MDN.

So to find string in array of string, the code becomes very simple. Plus as browser implementation, it will provide good performance.

Ex.

var strs = ['abc', 'def', 'ghi', 'jkl', 'mno']; var value = 'abc'; strs.find(     function(str) {         return str == value;     } ); 

or using lambda expression it will become much shorter

var strs = ['abc', 'def', 'ghi', 'jkl', 'mno']; var value = 'abc'; strs.find((str) => str === value);