Javascript 类型编号不能分配给类型字符串

我正在做一个增量游戏，遇到了一个错误。。。。。。。。。类型“number”不可分配给所有文档上的类型“string”。getElement

var vegetas = 0;
var gohan = 0;

function vegetaClick(number) {
    vegetas = vegetas + number;
    document.getElementById("Textout").innerHTML = vegetas;
};

function buyGohan() {
    var gohanCost = Math.floor(10 * Math.pow(1.1,gohan));     
    if(vegetas >= gohanCost){                                   
        gohan = gohan + 1;                                   
        vegetas = vegetas - gohanCost;                         
        document.getElementById("gohan").innerHTML = gohan;  
        document.getElementById('vegetas').innerHTML = vegetas;  
        document.getElementById("gohan").style.display= "block";
    };
    var nextCost = Math.floor(10 * Math.pow(1.1,gohan));       
    document.getElementById('gohanCost').innerHTML = nextCost;  
};

---

强制将

nextCost

强制转换为字符串值：

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

或

---

Try-innerHTML返回字符串，但是

vegetas

和

gohan

都是int。您在哪个浏览器上测试？至少在chrome中给innerHTML分配一个数字是可以的……给

innerHTML

分配一个数值对我来说很好。

// Note, no new
document.getElementById('gohanCost').innerHTML = String(nextCost);