这是PHP吧? Jquery是$('#b').qrcode({width:100,height:100,text:''});这种格式
<script type="text/javascript"> function utf16to8(str) { var out, i, len, c; out = ""; len = str.length; for(i = 0; i < len; i++) { c = str.charCodeAt(i); if ((c >= 0x0001) && (c <= 0x007F)) { out += str.charAt(i); } else if (c > 0x07FF) { out += String.fromCharCode(0xE0 | ((c >> 12) & 0x0F)); out += String.fromCharCode(0x80 | ((c >> 6) & 0x3F)); out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F)); } else { out += String.fromCharCode(0xC0 | ((c >> 6) & 0x1F)); out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F)); } } return out; } </script> <script type="text/javascript"> $('#qrcode').qrcode(utf16to8(" this is test 慕课网 ")); $('#qrcode').qrcode({width: 64,height: 64,text:utf16to8('this is test 慕课网') }); </script>