在尝试简单替换时,我尝试过这样的事情:
var dict =
{
...
};
var selector = ("'$greetings' '$friend'").replace(/\$([^']+)/g, dict[RegExp.$1])
但是只有一个匹配的字符串被相应键的值替换。
答案 0 :(得分:0)
使用函数作为第二个参数产生了预期的效果:
var selector = ("'$greetings' '$friend'").replace(/\$([^']+)/g, expand)
function expand(match, offset, fullstring)
{
var dict =
{
...
};
...
}
可以将其推广到tokenizer中,例如:
/* Get all anchors with the javascript: URI scheme */
$("a[href*='javascript']").each(function () {
javascriptURL(arguments[1])
})
/* Replace the javascript: URI with the URL within it */
function javascriptURL(anchor) {
var hyperlink = $(anchor).attr("href").replace(/./g, replacer).substring(1).replace(/'/g, "");
/* Class name for new window binding */
var newWindow = "extWin";
$(anchor).attr({
"href": hyperlink,
"class": newWindow
});
}
/* Grab all text between window.open() parens */
function replacer(match, offset, fullstring) {
var tokens = {
"(": true,
",": false,
";": false
};
/* Consume everything after the left paren */
if (tokens[match] === true) {
replacer.state = true
}
/* Discard everything after the first comma; also reset after a semicolon */
if (tokens[match] === false) {
replacer.state = false
}
/* Continue consuming or discarding otherwise */
if (tokens[match] === undefined) {
replacer.state = replacer.state;
}
/* Return the consumed string or an empty string depending on the tokenizer state */
if (replacer.state === true) {
return match
}
else {
return "";
}
}
function replace(pattern:*,repl:Object):String
repl:Object - 通常,插入的字符串代替匹配的内容。但是,您也可以将函数指定为此参数。如果指定了一个函数,则插入函数返回的字符串代替匹配的内容。
<强>参考强>