Question

JS中一个函数里的变量值，怎么可以直接在另外一个函数里用引用

下面是函数中，通过函数计算得到gwp的值并判断绘图。
后面我想把这个计算得到的gwp的值直接在其他函数中调用，应该怎么改
比如gwp改成全局变量，麻烦指导下，有代码就更好
$(function(){
var dom = document.getElementById("box4");
var myChart = echarts.init(dom);
var app = {};
option = null;
var y_f = [];
//全局变量,wgid在gognweizongtu.js中获取
var gwp = 0;
var xishu = [0.4,0.2,0.3,0.1];
var pjx = ["gzp","gyp","wlp","ryp"];
var pj = {"gongzhuang":"OK", "gongyi": "OK", "wuliao": "OK", "renyuan": "OK"};
var guige = [90, 90, 80, 75,85];
var xiang = ["gongzhuang","gongyi","wuliao","renyuan"];
for (var i = 0 ; i< xiang.length ; i++) {
var lent = data[xiang[i]].y.length ;
var ind = lent - 1 ;
y_f.push(data[xiang[i]].y[ind]);
if (data[xiang[i]].y[ind] < guige[i]){
pj[xiang[i]] = "NOK";
}
document.getElementById(pjx[i]).innerHTML = pj[xiang[i]];
gwp += y_f[i]*xishu[i];
}
y_f.push(88);
if (gwp > 85.5){
document.getElementById("gwpj").innerHTML ="OK";
}
gwp = gwp.toFixed(2);
document.getElementById("gwp").innerHTML =gwp;
document.getElementById("jinri").innerHTML =gwp;
document.getElementById("zuori").innerHTML =gwp;
document.getElementById("benzhou").innerHTML =gwp;
document.getElementById("lishi").innerHTML =gwp;
document.getElementById("gwp1").innerHTML =gwp1;
/*绘图代码省略*/
};
if (option && typeof option === "object") {
myChart.setOption(option, true);
}
})

Answer 1

 let gwpFun =  ()=> {
        var dom = document.getElementById("box4");
        var myChart = echarts.init(dom);
        var app = {};
        option = null;
        var y_f = [];
        //全局变量,wgid在gognweizongtu.js中获取
        var gwp = 0;
        var xishu = [0.4, 0.2, 0.3, 0.1];
        var pjx = ["gzp", "gyp", "wlp", "ryp"];
        var pj = { "gongzhuang": "OK", "gongyi": "OK", "wuliao": "OK", "renyuan": "OK" };
        var guige = [90, 90, 80, 75, 85];
        var xiang = ["gongzhuang", "gongyi", "wuliao", "renyuan"];
        for (var i = 0; i < xiang.length; i++) {
            var lent = data[xiang[i]].y.length;
            var ind = lent - 1;
            y_f.push(data[xiang[i]].y[ind]);
            if (data[xiang[i]].y[ind] < guige[i]) {
                pj[xiang[i]] = "NOK";
            }
            document.getElementById(pjx[i]).innerHTML = pj[xiang[i]];
            gwp += y_f[i] * xishu[i];
        }
        y_f.push(88);
        if (gwp > 85.5) {
            document.getElementById("gwpj").innerHTML = "OK";
        }
        gwp = gwp.toFixed(2);
        document.getElementById("gwp").innerHTML = gwp;
        document.getElementById("jinri").innerHTML = gwp;
        document.getElementById("zuori").innerHTML = gwp;
        document.getElementById("benzhou").innerHTML = gwp;
        document.getElementById("lishi").innerHTML = gwp;
        document.getElementById("gwp1").innerHTML = gwp1;
        /*绘图代码省略*/
        if (option && typeof option === "object") {
            myChart.setOption(option, true);
        }
        return gwp;
    }
    gwpFun()

 请采纳

Answer 2

定义到公共函数的任意位置都可以

Answer 3

把变量的值保存在页面的一个隐藏的text中，在另一个函数里读取这个text的值。试试这个方法

Answer 4

函数库中的变量一般都是封装好的 ， 不会对外暴露， 但是可以写个get方法吧这个参数值返回出来就可以了。 一遍都是这样处理的。

Answer 5

把这句话 var gwp = 0;移到$(function(){上面