[JS]How to transform from float to buffer by javascript

2021-9-9 萧
<head>

<title>Float to Buffer</title>



</head>





Input Float:

<textarea id="in"></textarea>



Output ASCII:

<textarea id="out"></textarea>



<input type="button" value="Transfor" onclick="transf();" />





<br />

<br />

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<a href="http://log.anycle.com">author:Anycle</a>



<style>

textarea{width:100%; margin:20px 0; }

input{width:200px; padding:5px; margin:auto;}

</style>



<script>



var hex = function(x){

	switch(x){

		case 10:

			y = 'A';

			break;

		case 11:

			y = 'B';

			break;

		case 12:

			y = 'C';

			break;

		case 13:

			y = 'D';

			break;

		case 14:

			y = 'E';

			break;

		case 15:

			y = 'F';

			break;	

		default:

			y = x.toString();

	}	

	return y;

}



var dec2hex = function(x){

	return hex( Math.floor(x/16) ) + hex(x%16);

}



var transf = function(){

	sin = document.getElementById("in").value;

	

	var ff = new Float32Array(1);

	ff[0] = sin;

	var ii = new Uint32Array(ff.buffer);

	console.log(ii);

	

	hh = "";

	yy = "";

	for(i=0; i<4; i++){

		hh = ii % 256;

		hh = dec2hex(hh);

		yy = yy + hh + " ";

		

		ii = Math.floor(ii/256);

	}



	document.getElementById("out").value = yy;

	

}

</script>
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