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JavaScript JavaScript Loops, Arrays and Objects Simplify Repetitive Tasks with Loops For Loops

Posted by Iliya Narsiya
Iliya Narsiya
3,387 Points

Using the html

Why is an empty string, we can only use html? Why other variables code does not work?

var html = ' ';

for (var i = 1; i <= 10; i++){ html += '<div>' + i + '</div>';

} document.write(html);

1 Answer

Alexandria Wagner
Alexandria Wagner
7,038 Points
Alexandria Wagner
Alexandria Wagner
7,038 Points

Hi Iliya,

When you declare a variable, you can name that variable any name, within standard naming conventions. You can find more information about declaring variables on the Mozilla Developer Network page on JavaScript grammar.

When using concatenation, it's important to be careful about separating the pieces you are concatenating. The example code from the lesson separates the string values from the variable being affected in the for loop. Your example lists {html += " + i + ";}, as compared to the code below:

var html = '';
for(var i = 1; i <= 10; i+=1){
  html += '<div>' + i + '</div>';
}

I hope this helps! Best, Alex

Iliya Narsiya
Iliya Narsiya
3,387 Points

I mean why in this code, we assign variable html. On the other variable the code is not running.