JavaScript if Statement
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JavaScript if Statement
The if statement executes a block of code if a specified condition is true.
Without Using Curly Brackets
Note: It is not necessary to use open and close curly brackets if you want to execute just one statement when the condition is true.
HTML Online Editor
<!DOCTYPE html>
<html>
<body>
<p>Try to change "num = 50" to "num = 150"</p>
<p id="point"></p>
<p id="point1"></p>
<script>
var x = document.getElementById("point");
var y = document.getElementById("point1");
var num = 50;
if(num < 100)
x.innerText = "num is less than 100";
y.innerText = "I will always execute";
</script>
</body>
</html>
Syntax
if (condition)
// one line code
Using Curly Brackets
Note: It is necessary to use open and close curly brackets if you want to execute more than one statement when the condition is true.
Example
HTML Online Editor
<!DOCTYPE html>
<html>
<body>
<p>Try to change "num = 50" to "num = 150"</p>
<p id="point"></p>
<p id="point1"></p>
<script>
var x = document.getElementById("point");
var y = document.getElementById("point1");
var num = 50;
if(num < 100){
var txt = "num is less than 100";
x.innerText = txt;
}
y.innerText = "I will always execute";
</script>
</body>
</html>
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