JavaScript for循环崩溃浏览器

Question

这个循环在运行时会崩溃浏览器,但我看不出原因 - 函数getN是三个函数,用于分解二次方程.我确定这是导致问题的循环,我已经测试了这个,并且当for循环存在时浏览器只会崩溃.任何帮助将不胜感激.

function getN(decP){
var a = document.getElementById("a-f").value;
var b = document.getElementById("b-f").value;
var c = document.getElementById("c-f").value;
var n_1 =0;
var n_2 =0;
var result = Math.pow(10, (decP*-1));
var a_c = a*c;
var neg_a_c = 0;
var pos_a_c = 0;
if(a_c<0){
    neg_a_c = a_c;
    pos_a_c = a_c*-1
}
else{
    pos_a_c = a_c;
    neg_a_c = a_c*-1;
}
for(x=neg_a_c;x<=pos_a_c;x+result){
    if(x!==0){
        if(x+(a_c/x)===b){
            var num1 = x;
            var num2 = a_c/x;
        }
    }
}
divideByCoefficient(num1, num2)
};

Answer 1

for(x=neg_a_c;x<=pos_a_c;x+result){
                          ^
                           `-----here

你可能意味着x += result(或x = x + result),而不仅仅是x+result.

x+result永远不会修改x.所以x总是等于neg_a_c并且循环永远运行.