1.vue中用eval执行函数

let x = 8;
let tt = eval("(function(){return " + x + " })()");
console.log('tt', tt)  //8

2.执行if else

 let x = 8;
    // 假设你有一个字符串形式的if...else...条件语句

    var condition = "if(x > 5) { console.log('greater than 5'); } else { console.log('less than or equal to 5'); }";
    // 使用eval执行条件语句
    eval(condition);