Remove string after "dot" on a number

Question

I have in a variable in javascript the value:

<script>
var valor1 = "123.33";
</script>

I would like to remove the . 33, leave only the 123. Taking into account that this value is variable, it can be 1233.30, 1001.44, finally...

Answer 1

Already have something ready tested that is the parseInt().

console.log(parseInt("123.33"));

I put in the Github for future reference.

Answer 2

var str = "123.33";
var res = str.split(".");

alert(res[0]);

res[0] = 123