<!doctype html>test
// 单行注释
/**
* 多行注释
* @date 2014-05-12 22:24:37
* @name 测试一下
*/
var str1 = "123\"456";
var str2 = '123\'456';
var str3 = "123\
456";
var num = 123;
var arr = [12, 12.34, .12, 1e3, 1e+3, 1e-3, 12.34e3, 12.34e+3, 12.34e-3, .1234e3];
var arr = ["12", "12.34", '.12, 1e3', '1e+3, 1e-3', '12.34e3, 12.34e+3, 12.34e-3', ".1234e3"];
var arr = [/12", "12.34/, /"12\/34"/];
for (var i=0; 1e3>i; i++) {
var node = document.getElementById("a"+i);
arr.push(node);
}
function test () {
return true;
}
test();
(function(window, undefined) {
var _re_js = new RegExp('(\\/\\/.*|\\/\\*[\\s\\S]*?\\*\\/)|("(?:[^"\\\\]|\\\\[\\s\\S])*"|\'(?:[^\'\\\\]|\\\\[\\s\\S])*\')|\\b(true|false|null|undefined|NaN)\\b|\\b(var|for|if|else|return|this|while|new|function|switch|case|typeof|do|in|throw|try|catch|finally|with|instance|delete|void|break|continue)\\b|\\b(document|Date|Math|window|Object|location|navigator|Array|String|Number|Boolean|Function|RegExp)\\b|(?:[^\\W\\d]|\\$)[\\$\\w]*|(0[xX][0-9a-fA-F]+|\\d+(?:\\.\\d+)?(?:[eE][+-]?\\d+)?|\\.\\d+(?:[eE][+-]?\\d+)?)|(?:^|[^\\)\\]\\}])(\\/(?!\\*)(?:\\\\.|[^\\\\\\/\\n])+?\\/[gim]*)|[\\s\\S]', 'g');
function prettify(node) {
var code = node.innerHTML.replace(/\r\n|[\r\n]/g, "\n").replace(/^\s+|\s+$/g, "");
code = code.replace(_re_js, function() {
var s, a = arguments;
for (var i = 1; i <= 7; i++) {
if (s = a[i]) {
s = htmlEncode(s);
switch (i) {
case 1: //注释 com
return '<span class="com">' + s + '
</span>';
case 2: //字符串 str
return '<span class="str">' + s + '
</span>';
case 3: //true|false|null|undefined|NaN val
return '<span class="val">' + s + '
</span>';
case 4: //关键词 kwd
return '<span class="kwd">' + s + '
</span>';
case 5: //内置对象 obj
return '<span class="obj">' + s + '
</span>';
case 6: //数字 num
return '<span class="num">' + s + '
</span>';
case 7: //正则 reg
return htmlEncode(a[0]).replace(s, '<span class="reg">' + s + '
</span>');
}
}
}
return htmlEncode(a[0]);
});
code = code.replace(/(?:\s*\*\s*|(?: )*\*(?: )*)(@\w+)\b/g, ' * <span class="comkey">$1
</span>') // 匹配注释中的标记
.replace(/(\w+)(\s*\(|(?: )*\()|(\w+)(\s*=\s*function|(?: )*=(?: )*function)/g, '<span class="func">$1
</span>$2') // 匹配函数
return code;
}
function htmlEncode(str) {
var i, s = {
// "&": /&/g,
""": /"/g,
"'": /'/g,
"<": /
</g,
">": />/g,
"<br>": /\n/g,
// " ": / /g, // pre 标签不需要替换空格
" ": /\t/g
};
for (i in s) {
str = str.replace(s[i], i);
}
return str;
}
window.prettify = prettify;
})(window);
var code = document.getElementById("regdemon");
code.innerHTML = prettify(code);
转载于:https://www.cnblogs.com/znj211985211/p/7448112.html
