I need some help. I need to match some value with one variable containing value which is comma separated string using Angular.js or Javascript. I am explaining my code below.
var special="2,1,4,5";
Here I need to search lets say 1 is present in this comma separated string or not. If the given value is present it will return true otherwise false.Please help.
With array split
var found = special.split(",").indexOf("1") > -1;
var special="2,1,4,5";
var found = special.split(",").indexOf("1") > -1;
console.log(found); // trueJust to prove that String's indexOf won't work
var special="2,11,4,5";
var found = special.indexOf("1") > -1;
console.log(found); // true but actual should be false as there is no 1
indexOf on string
1 and the element is 11, String's indexOf returns true. Added a demo for the sameTry this,
var special="2,1,4,5";
var searchFor="1";
var index=special.split(",").indexOf(searchFor);
if(index === -1) return false;
else return true;
You can first convert the string to an array like this:
var specialArray = special.split(',');
Once you have an array you can use indexOf to find the item in the array.
var itemIndex = specialArray.indexOf('1');
itemIndex will be -1 when the value you're looking for isn't in the array. When the result of indexOf is greater than -1 it is the index of the item in the array.
You can use regular expression for this:
/(^|,)1(,|$)/.test("2,1,4,5") // => true
just to test negative case
/(^|,)1(,|$)/.test("2,11,4,5") // => false
If you have multiline string (that contains \r\n), use /(^|,)1(,|$)/m instead
