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can.html

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<meta name=viewport content="width=device-width,initial-scale=1">
<div id="show1"></div>
<canvas id="canvas1" width="0" height="0">the explorer is not support canvas.</canvas><br>
<input id="input1" type="text" onload="" oninput="getUUID(this.value);"></input>
<script>
        //var canvas = document.createElement('canvas');
        //document.body.appendChild(canvas);
    var showdiv = document.getElementById("show1");
    var canvas = document.getElementById("canvas1");
    var text = document.getElementById("input1");
    text.focus();
    function bin2hex(s) {
        var i, l, o = '',
            n;

        s += '';

        for (i = 0, l = s.length; i < l; i++) {
            n = s.charCodeAt(i)
            .toString(16);
            o += n.length < 2 ? '0' + n : n;
        }

        return o;
    }

    function getUUID(str) {
        if (str=='') {
            showdiv.innerHTML = '';
            canvas.width = 0;
            canvas.height = 0;
            return;
        }
        var b = 1;
        var ctx = canvas.getContext("2d");

        //ctx.font = "14px 'Arial'";
        canvas.width = ctx.measureText(str).width + b*2;
        console.log(canvas.width);
        canvas.height = 20;
        //ctx.textBaseline = "top";
        //ctx.textBaseline = "bottom";
        ctx.fillStyle = "#f60";
        ctx.fillRect(10,4,62,20);
        ctx.fillStyle = "#069";
        ctx.fillText(str, b, 15);
        //ctx.fillStyle = "rgba(102, 204, 0, 0.7)";
        //ctx.fillText(txt, 4, 17);

        var b64 = canvas.toDataURL().replace("data:image/png;base64,","");
        showdiv.innerHTML = b64.slice(100, 132);
        var bin = atob(b64);
        //var crc = bin2hex(bin.slice(-16,-12));
        var crc = bin2hex(bin.slice(100,120));
        //var crc = md5(bin);
        //return crc;
        showdiv.innerHTML += "<br>" + crc;
    }

    //getUUID("f0929514060453598818b0486161a71682829536fffffffffffffffffffff");

</script>

This file is foot.omf, and valine in it.

2022-07-04 16:27:39 Monday 34.239.147.7 Runningtime:2.081s Mem:414.63 KB