How to Limit Decimal Places Without Rounding in JavaScript
When working with decimal values, it's often desirable to display them with a specific number of decimal places, even if it results in truncation. The toFixed() method, as demonstrated in the provided code snippet, rounds the value to the specified number of decimal places. However, if we want to truncate instead of rounding, we need to employ an alternative approach.
The solution lies in converting the number to a string and using a regular expression to match the desired number of decimal places:
<br>function calc(theform) {</p>
<div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false">var num = theform.original.value, rounded = theform.rounded
var with2Decimals = num.toString().match(/^-?\d+(?:\.\d{0,2})?/)[0]
rounded.value = with2Decimals}
In this code, we:
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