Disallow Floating Decimals (no-floating-decimal)
var num = .5; var num = 2.; var num = -.7;
Although not a syntax error, this format for numbers can make it difficult to distinguish between true decimal numbers and the dot operator. For this reason, some recommend that you should always include a number before and after a decimal point to make it clear the intent is to create a decimal number.
This rule is aimed at eliminating floating decimal points and will warn whenever a numeric value has a decimal point but is missing a number either before or after it.
Examples of incorrect code for this rule:
/*eslint no-floating-decimal: "error"*/ var num = .5; var num = 2.; var num = -.7;
Examples of correct code for this rule:
/*eslint no-floating-decimal: "error"*/ var num = 0.5; var num = 2.0; var num = -0.7;
When Not To Use It
If you aren't concerned about misinterpreting floating decimal point values, then you can safely turn this rule off.
- JSHint: W008, W047