JavaScript: For Loops

Example: Simple For Loop in JavaScript


	<script>
	for (x = 0; x < 5; x++) { 
		document.write("<p>This is a paragraph.</p>");
	}
	</script>
	

Output:

  This is a paragraph.

  This is a paragraph.

  This is a paragraph.

  This is a paragraph.

  This is a paragraph.

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Example: JavaScript For Loop with Decrement and Concatenation


	<script>
	for (x = 5; x > 0; x--) { 
		document.write("<p>x = " + x + ".</p>");
	}
	</script>
	

Output:

  x = 5.

  x = 4.

  x = 3.

  x = 2.

  x = 1.

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Example: JavaScript For Loop


	<script>
	for (x=1; x < 7; x+=2) { 
		document.write("<p>x = " + x + ".</p>");
	}
	</script>
	

Output:

  x = 1.

  x = 3.

  x = 5.

Run It


Example: JavaScript For Loop


	<script>
	var x = 1;
	for (; x < 7;) { 
		document.write("<p>x = " + x + ".</p>");
		x += 2;
	}
	</script>
	

Output:

  x = 1.

  x = 3.

  x = 5.

Run It