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JS 一个变量名可以用变量来表示吗?

var a1 = 1;
var a2 = 2;
var a3 = 3;
var a4 = 4;
如此类推,直到99。。

这样一个个定义有点累人,有偷懒的写法吗?

自己试写了下,报错了~~怎么解决呢!

for(var i = 1;i<99;i++){
    console.log(i);
    var ['a' + i] = i;
}
console.log(a8);

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
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for(var i = 1;i<99;i++){
    console.log(i);
    eval(`var a${i} = ${i};`)
}

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
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