有没有办法抑制<input type =“number”>的科学记数法？

Question

I'd like to input numbers with up to eight decimal points with an <input> element. However, if I have an <input type="number" step="0.00000001"> and use the up/down arrows on the input element (on Chrome; here's the jsfiddle ), then I get scientific notation for the small numbers:

If I input, say, 5, and then hit the arrow key, then scientific notation is suppressed:

Is there any way to get the browser to display the 1e-8 as 0.000000001 ?

Also, is there any danger here that with sufficiently small numbers, I'll hit floating point rounding errors?

 <input type="number" step="0.00000001"> 

Answer 1

 <input oninput='precise(this)' type="number" step="0.00000001"> <script> function precise(elem) { elem.value = Number(elem.value).toFixed(8); } </script> 

You can change the toFixed parameter to the desired number of decimal digits as needed. I hope this helps!

Answer 2

以下是基于StardustGogeta 答案的变体：

<input oninput="this.value=Number(this.value).toFixed(this.step.split('.')[1].length)" type=number step="0.00000001">