1、作用
递归合并来源对象的自身和继承的可枚举属性到目标对象。
2、示例
<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta http-equiv="X-UA-Compatible" content="ie=edge" />
<title>lodash mergeWith使用</title>
</head>
<body>
<script src="https://cdn.bootcss.com/lodash.js/4.17.10/lodash.min.js"></script>
<script type="text/javascript">
function customizer(objValue, srcValue) { if(_.isArray(objValue)) { return objValue.concat(srcValue); } } var object = { 'fruits': ['apple'], 'vegetables': ['beet'] }; var other = { 'fruits': ['banana'], 'vegetables': ['carrot'] }; let o1 = _.mergeWith(object, other, customizer); let o2 = _.mergeWith(object, other); let o3 = _.merge(object, other); console.log(_.isEqual(o1, o2)) //true
console.log(_.isEqual(o3, o2)) //true
</script>
</body>
</html>