index of in string javascript code example
Example 1: javascript indexof
var colors=["red","green","blue"];
var pos=colors.indexOf("blue");
var str = "We got a poop cleanup on isle 4.";
var strPos = str.indexOf("poop");
Example 2: js find index of string in string
function findNemo(sentence) {
let indexOfFirst = sentence.split(' ').indexOf('Nemo') + 1;
if(indexOfFirst >= 0){
return `I found Nemo at ${indexOfFirst}!`;
}
return ("I can't find Nemo :(");
}
console.log(findNemo("I am finding Nemo !"));
console.log(findNemo("Nemo is me"));
console.log(findNemo("I Nemo am"));
Example 3: js indexof string
const paragraph = 'The quick brown fox';
console.log(paragraph.indexOf('T'));
>> 0
console.log(paragraph.indexOf('h'));
>> 1
console.log(paragraph.indexOf('Th'));
>> 0
console.log(paragraph.indexOf('he'));
>> 1
console.log(paragraph.indexOf('x'));
>> 18
Example 4: js indexof string
str.indexOf(searchValue[, fromIndex])
Example 5: indexof javascript
Array.indexOf(searchElement, fromIndex)