***综合类***文本加密 可将英文转成数字式样
把下列代码加到网页的<body></body>标签之间 从google下载我的照片管理软件要完成此效果需要两个步骤
第一步：把如下代码加入到<head>区域中
<script language="javascript">
<!-- begin
var str_in;
var str_out = "";
var num_in;
var num_out = "";
var e = "enter text!";
function str_to_num(form) {
num_out = "";
if(form.input.value == "") alert(e);
else {
str_in = escape(form.input.value);
for(i = 0; i < str_in.length; i++) {
num_out += str_in.charcodeat(i) - 23;
}
form.output.value = num_out;
form.input.value = "";
}
}
function num_to_str(form) {
str_out = "";
if(form.output.value == "") alert(e)
else {
num_out = form.output.value;
for(i = 0; i < num_out.length; i += 2) {
num_in = parseint(num_out.substr(i,)) + 23;
num_in = unescape('%' + num_in.tostring(16));
str_out += num_in;
}
form.input.value = unescape(str_out);
form.output.value = "";
}
}
//end -->
</script>
第二步：把如下代码加入到<body>区域中
<center>
<form name=encryptform>
<table>
<tr>
<td align=center>
<input name=input type=text size=40 value="javascript fairyland">
</td>
<td align=center>
<input type=button value="<--" onclick="javascript:num_to_str(this.form)">
<br>
<input type=button value="-->" onclick="javascript:str_to_num(this.form)">
</td>
<td align=center>
<input name=output type=text size=40>
</td>
</tr>
</table>
</form>
</center>
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