Javascript:如何使用 escape()函数
JavaScript escape() 返回经过重新编码过的字符串。转自Vnde.cn
escape()格式
escape(String)
escape()参数
String 必填。String 对象或文字。
注意:
escape()只编译符号和中文 英文则原样输出
测试代码:
<script type="text/javascript">
document.write("测试字符串<font color=\"#FF0000\">Javascript escape函数</font> 编码后<font color=\"#FF0000\">");
document.write(escape("Javascript escape函数"));
document.write("</font><br>");
</script>
运行结果:
<script type="text/javascript"></script> 测试字符串Javascript escape函数 编码后Javascript%20escape%u51FD%u6570
http://zhiming-817.iteye.com/admin/blogs/new
JAVA写的escape函数,可以处理JAVASCRIPT的ESCAPE处理的字符,避免字符集问题
public String escape(String src) {
int i;
char j;
StringBuffer tmp = new StringBuffer();
tmp.ensureCapacity(src.length() * 6);
for (i = 0; i < src.length(); i++) {
j = src.charAt(i);
if (Character.isDigit(j) || Character.isLowerCase(j)
|| Character.isUpperCase(j))
tmp.append(j);
else if (j < 256) {
tmp.append("%");
if (j < 16)
tmp.append("0");
tmp.append(Integer.toString(j, 16));
} else {
tmp.append("%u");
tmp.append(Integer.toString(j, 16));
}
}
return tmp.toString();
}
public String unescape(String src) {
StringBuffer tmp = new StringBuffer();
tmp.ensureCapacity(src.length());
int lastPos = 0, pos = 0;
char ch;
while (lastPos < src.length()) {
pos = src.indexOf("%", lastPos);
if (pos == lastPos) {
if (src.charAt(pos + 1) == 'u') {
ch = (char) Integer.parseInt(src
.substring(pos + 2, pos + 6), 16);
tmp.append(ch);
lastPos = pos + 6;
} else {
ch = (char) Integer.parseInt(src
.substring(pos + 1, pos + 3), 16);
tmp.append(ch);
lastPos = pos + 3;
}
} else {
if (pos == -1) {
tmp.append(src.substring(lastPos));
lastPos = src.length();
} else {
tmp.append(src.substring(lastPos, pos));
lastPos = pos;
}
}
}
return tmp.toString();
}