我有EJS字符串，并且我试图在对象{name: 1,car: 1}中获得 EJS 标签变量名，因为我只需要从数据库中投影那些存在的值在字符串中。
示例：
let str = "His name is <%= name %> and he has <%= car[0].color %> car. <%= name %> is working in XYZ";
str = str.split(' ');
let project = {};
str.forEach((text,index) =>{
if(text === '<%='){
project[str[index + 1].split('[')[0]] = 1;
}
});
console.log(project) // {name: 1,car: 1}
是否有更好的方法可以达到相同目的或使用RegEx。
试图使用正则表达式
var pattern = "<%=\s[a-zA-Z]+"; // will also find the '<%= ' at the beginning,will be cut out later
var str = "His name is <%= name %> and he has <%= car[0].color %> car. <%= name %> is working in XYZ";
var found = str.match(pattern); // get all matches
let project = {};
found.forEach((text,index) =>{
found[index] = found[index].substring(4); // to cut out '<%= '
project[found[index]] = 1; // add it to the array
});
console.log(project);