How to find a word in a text

That depends a lot on how your scenario is.

If you want to find out if a string contains a given data, you can check it with indexOf or using match .

Example:

var texto = "eu sou programador javascript";

var contemTexto = texto.indexOf("programador") > -1 ? true : false;

The indexOf will return the "INDEX" containing that text, if it does not, the result is -1 as default.

The match it returns a array with the word you are looking for.

Example:

var texto = "Eu sou programador javascript";
var resultado = texto.match("programador");

Now the result is, array with all developer occurrences in that phrase. In the case above, it only exists 1x, but if it was a big sentence, it would return every time:)