Using either “&&” or “||” i.e. logical AND or logical OR operator or combination of can achieve 3 conditions in if statement JavaScript.
The && operator “short-circuits” – that is, if the left condition is false, it doesn’t bother evaluating the right one.
Similarly, the || operator short-circuits if the left condition is true.
Read more: JavaScript if multiple conditions
Example 3 conditions in if statement JavaScript
Simple example code will test for all 3 of those conditions or, after seeing that b does equal 1, or c is equal to 1.
<!DOCTYPE html>
<html>
<body>
<script>
a = 1;
b = 2;
c = 1;
if (a==1 && b==2 && c==1){
console.log("ALL")
};
if (a==1 && (b==1 || c==1)){
console.log("a and b or c")
};
</script>
</body>
</html>
Output:
You can combine as many logic operations as you want into one if a statement using any of the javascript logic and comparison operators.
if ((intervalCheck == 0) || (intervalCheck >= 5000 && intervalCheck <= 3600000)) {
// put your code here
}Do comment if you have any doubts or suggestions on this JS if code.
Note: The All JS Examples codes are tested on the Firefox browser and the Chrome browser.
OS: Windows 10
Code: HTML 5 Version