# javascript integer to string conversion

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javascript integer to string conversion
1 Answer(s)      5 years and 7 months ago
Posted in : JavaScript Questions

How to Javascript Integer to String Conversion

March 31, 2012 at 5:07 PM

<script type="text/javascript">
/**
* print out the value and the type of the variable passed in
*/

function printWithType(val) {
document.write('<pre>');
document.write(val);
document.write(' ');
document.writeln(typeof val);
document.write('</pre>');
}

var a = "1", b = "2", c = "3", result;

// Step (1) Concatenate "1", "2", "3" into "123"
// - concatenation operator is just "+", as long
//   as all the items are strings, this works
result = a + b + c;
printWithType(result); //123 string

// - If they were not strings you could do
result = a.toString() + b.toString() + c.toString();
printWithType(result); // 123 string

// Step (2) Convert "123" into 123
result = parseInt(result,10);
printWithType(result); // 123 number

// Step (3) Add 123 + 100 = 223
result = result + 100;
printWithType(result); // 223 number

// Step (4) Convert 223 into "223"
result = result.toString(); //
printWithType(result); // 223 string

// If you concatenate a number with a
// blank string, you get a string
result = result + "";
printWithType(result); //223 string
</script>

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