JQuery string contains check

Question

I need to check whether a string contains another string or not?

var str1 = "ABCDEFGHIJKLMNOP";
var str2 = "DEFG";

Which function do I use to find out if str1 contains str2?

Answer 1

var str1 = "ABCDEFGHIJKLMNOP";
var str2 = "DEFG";

sttr1.search(str2);

it will return the position of the match, or -1 if it isn't found.

Answer 2

simply on foreach loop with you can compare ,separated to strings

var commaseparateMainstring = 'shekar,jagadeesh,pavan,sai,suneel';
    var sustring = 'shekar,gopi,raju,suneel';
    //adding comma both sides of main string
    var main = ',' + commaseparateMainstring + ',';
    //substring change as array
    var substingArray = listToArray(sustring, ',');
    $.each(substingArray, function (index, value) {
        //calling is exist method here value means each value in substring
        var isexisted = isExist(main, value)
        if (isexisted) {
            //substring item existed
        }
        else {
        }
    });




//isExist method it checks substring exist in mainstring or not


function isExist(mainString, substring) {

if (mainString.indexOf(substring) != -1) {
    return true;
}
else {
    return false;
}
}

Answer 3

You can use javascript's indexOf function.

var str1 = "ABCDEFGHIJKLMNOP";
var str2 = "DEFG";
if(str1.indexOf(str2) != -1){
    console.log(str2 + " found");
}