29
SepHow to find a string within a jQuery or javascript string
Sometimes, you required to find a the existence of a small string with in a string. This article will demonstarte, how could you do by using plain JavaScript.
First Method
//returns -1 if doesn't contains if (str.indexOf("Hello") >= 0) { //string contains Hello } //OR //For your are not sure about the case of the string //returns -1 if doesn't contains if (str.toLowerCase().indexOf("hello") >= 0) { //string contains hello }This indexOf() method will return the position of the match, or -1 if it isn’t found.
Second Method
//returns false if doesn't contains if (/hello/i.test(str)) { //string contain Hello }
What do you think?
I hope you will enjoy the tips while playing with JavaScript. I would like to have feedback from my blog readers. Your valuable feedback, question, or comments about this article are always welcome.
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