Type ‘number‘ is not assignable to type ‘string‘

document.getElementById('gohanCost').innerHTML = 0;
报错：
Type ‘number’ is not assignable to type ‘string’
类型“number”不可分配给类型“string”

解决方法

document.getElementById('gohanCost').innerHTML = "" + 0;

or

document.getElementById('gohanCost').innerHTML = String(0);