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正文开始 <p>字符串：</p><p>var aa='2'<br /></p><p>var str = "f {d + {c + { b+{aa} } 666 ";</p><p>第1步，提取第一个} .即 f {d + {c + { b+{aa}</p><p>第2步，替换最后一个{aa} . 即 f {d + {c + { b+ 2 ；继续执行第一步<br /></p><p> </p><p><br /></p><p><pre>var matches = str.match(/{([^}]*?)}/g);// ["{id}", "{name}", "{1+2}"]
var matchVal = '';
var resultStr = '';
var hasManyKuo = false;
//替换多个括号 {fff{asds} => {fff123
function matchOne(str2) {
if(typeof str2 =='object') str2 = str2[0];
var lastKuo = str2.lastIndexOf('{');// ["{id}", "{name}", "{1+2}"]
if(lastKuo == -1) {
return str2;
}
var reMatche = str2.slice(lastKuo); // {sf}
var reMatchVal = reMatche.replace(/{|}/g, '');
var thisResult = '';
if(!isUndefined(data_[reMatchVal])) {
thisResult = data_[reMatchVal];
} else {
thisResult = eval(reMatchVal);
}
str2 = str2.replace(reMatche, thisResult);
//{aaa{dadasd{cc} //再次判断是否还有最后的一组数据
var matchesReStr = str2.match(/{([^{]*?){([^}]*?)}/g);
if(matchesReStr) {
str2 = matchOne(matchesReStr);
}
return str2;
}
matches.forEach(function (match) {
var manyRe = /{([^{]*?){([^}]*?)}/g; //{aaa{dadasd{cc} //过滤最后的一组数据
var matchesReStr = match.match(manyRe);
if(matchesReStr) {
match = matchOne(matchesReStr);
str = str.replace(matchesReStr, match);
hasManyKuo = true;
return;//continue
}
matchVal = match.replace(/{|}/g, '');
if(!isUndefined(data_[matchVal])) {
resultStr = data_[matchVal];
} else {
resultStr = eval(matchVal);
}
str = str.replace(match, resultStr);
});
//如果替换后 仍含有多个括号 { xxx } 继续替换
if(hasManyKuo) {
str = filedStrToObj(str, data_, index);
}</pre> <br /></p>
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