[英]Jquery, Find a subarray that contains a value
我想将一个变量“推”到一个包含值的子数组中。 这是为了集成到一个“for循环”中。 但它不起作用..:-(我的错误在哪里?谢谢。
var add = "purple";
var val = "white";
arr = [
["blue","green","brown"],
["white","gray","black"],
["yellow","pink","red"]
];
subarr = [].indexOf(val) > -1;
arr[subarr].push(add);
/*
expected output :
arr = [
["blue","green","brown"],
["white","gray","black","purple"],
["yellow","pink","red"]
]
*/
您正在寻找
subarr = [].indexOf(val) > -1;
成一个空数组。
相反,您可以找到子数组,如果存在则将值推送给它。
const add = "purple"; val = "white", arr = [["blue", "green", "brown"], ["white", "gray", "black"], ["yellow", "pink", "red"]], sub = arr.find(a => a.includes(val)); if (sub) sub.push(add); console.log(arr);
.as-console-wrapper { max-height: 100%;important: top; 0; }
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.