把字符换成&#编码

写道

<script type="text/javascript">

var toHTML = {

on : function (str) {
var a = [], i = 0;

for (; i < str.length ;) a[i] = str.charCodeAt(i ++);

return "&#" + a.join(";&#") + ";";
},

un : function (str) {
return str.replace(/&#(x)?([^&]{1,5});?/g, function (a, b, c) {
return String.fromCharCode(parseInt(c, b ? 16 : 10));
});
}

};

alert(toHTML.on("\"请输\""));
alert(toHTML.un(""请输""));
</script>