js一个简单的字符串渲染代码

wlp

  

function template (text, data) {  
let regex = /\$\{\s* ([\w_$][\w\d_$]* (?:\[[\d_]+\])* (\.[\w_$][\w\d_$]* (?:\[[\d_]+\])*)*)\s*\}/g;  
return text.replace (regex, (match, path) => {  
let object = data;  
let parts = path.split ( ' .');  

for (let part of parts) {  
let keyIndexMatch = part.match (/ ([\w_$][\w\d_$]*) (?:\[ ([\d_]+)\])?/);  
if (!keyIndexMatch) return ' undefined';  

let key = keyIndexMatch[1];  
let index = keyIndexMatch[2];  

if (! (key in object)) return ' undefined';  

object = object[key];  

if (index !== undefined) {  
if (!Array.isArray (object) || index < 0 || index >= object.length) {  
return ' undefined';  
}  
object = object[index];  
}  
}  

return String (object);  
});  
}

function template(text, data) {  <br />     let regex = /\$\{\s*([\w_$][\w\d_$]*(?:\[[\d_]+\])*(\.[\w_$][\w\d_$]*(?:\[[\d_]+\])*)*)\s*\}/g;  <br />     return text.replace(regex, (match, path) => {  <br />         let object = data;  <br />         let parts = path.split('.');  <br />   <br />         for (let part of parts) {  <br />             let keyIndexMatch = part.match(/([\w_$][\w\d_$]*)(?:\[([\d_]+)\])?/);  <br />             if (!keyIndexMatch) return 'undefined';  <br />   <br />             let key = keyIndexMatch[1];  <br />             let index = keyIndexMatch[2];  <br />   <br />             if (!(key in object)) return 'undefined';  <br />   <br />             object = object[key];  <br />   <br />             if (index !== undefined) {  <br />                 if (!Array.isArray(object) || index < 0 || index >= object.length) {  <br />                     return 'undefined';  <br />                 }  <br />                 object = object[index];  <br />             }  <br />         }  <br />   <br />         return String(object);  <br />     });  <br /> }

template("${$a.$$b.$a}  123", {$a:{$$b:{$a:'asddd'}}})
支持对象和数组访问, 不支持Object["key"]这种访问

这下真成吗喽了，gpt比我还聪明能干，还比我便宜

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换种思路  你拿着工资请gpt干活