搜索子串的数组元素并返回索引

Question

我正在尝试搜索数组中的每个元素以查找它是否包含子字符串。如果确实如此，我希望返回索引。

目前，我正在使用此代码：

function searchString(){
    for(n=0; n<a0.length; n++){
        if(a0[n].substring(0,4)=="heat"){
            return n;
        }
    };
}

a0 = new Array("bbc_0","d","e","heat_","a","c");

a2 = searchString();
alert("heat APPEARS @ index: "+a2);

但不确定这是否是最好的方法。

Answer 1

试试这个

const arr = ["bbc_0","d","e","heat_","a","c"]
const index = arr.findIndex(i => i.includes("heat"))
console.log(index) //should be 3