I have seen code that is written like this: <meta name="viewport" content="width=device-width, initial-scale=1">, but I have also seen code that is written like this: <meta name="viewport" content="width=device-width, initial-scale=1.0"> Is there a difference between initial-scale=1 and initial-scale=1.0?
Is there a difference between initial-scale=1 and initial-scale=1.0?
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No. The specification describes the viewport <meta> tag content parsing algorithm non-normatively, but says the following about values:
If a prefix of property-value can be converted to a number using
strtod, the value will be that number. The remainder of the string is ignored.
strtod is a function from the C standard library. strtod("1") is equal to strtod("1.0"), which is equal to the number 1, so there's no difference.
initial-scale sets the initial zoom factor of the page to the defined value, calculated relative to the ideal viewport. Thus it generates a visual viewport width.
It also sets the layout viewport width to the visual viewport width it just calculated.
As far as I know, there's no difference between initial-scale=1 and initial-scale=1.0.
But I suggest you to use initial-scale=1.0 to keep the same typewriting with all other possible values (range between 0.1 and 10.0).
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