【前端开发】GIS及JS题目 

<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		<script>
			var aaa = {}
			aaa.q111 = '1111'
			console.log(aaa);

			const bbb = {}
			bbb.q111 = '1111'
			console.log(bbb);


			function getQueryVariable(variable) {
				var query = window.location.search.substring(1);
				var vars = query.split("&");
				for (var i = 0; i < vars.length; i++) {
					var pair = vars[i].split("=");
					if (pair[0] == variable) {
						return pair[1];
					}
				}
				return (false);
			}

			var obj = {
				name: "abc",
				age: 123,
				card: ['visa', 'master'],
				wife: {
					name: 'bcd',
					son: {
						name: 'aaa'
					}
				}
			}

			console.log(obj)

			var obj1 = obj;
			obj1.fff = "2222"

			console.log(obj1);

			var obj1 = {

			}
			//深度拷贝
			function deepClone(origin, target) {
				var target = target || {},
					toStr = Object.prototype.toString,
					arrStr = "[object Array]";
				for (var prop in origin) {
					if (origin.hasOwnProperty(prop)) {
						if (origin[prop] !== "null" && typeof(origin[prop]) == 'object') {
							// if (toStr.call(origin[prop]) == arrStr) {
							//     target[prop] = [];
							// } else {
							//     target[prop] = {};
							// }
							target[prop] = toStr.call(origin[prop]) == arrStr ? [] : {};
							deepClone(origin[prop], target[prop]);
						} else {
							target[prop] = origin[prop];
						}
					}
				}
				return target;
			}
			deepClone(obj, obj1);

			console.log(obj1)
		</script>
	</body>
</html>

1、URL解析：正则或字符串分割

2、值和引用：地址

3、拷贝：递归、取值赋值

4、Multipolygon、polygon

5、leaflet-geojson：图层顺序，拷贝数据附加

posted @ 2021-12-04 21:43  咸鱼翻身  阅读(112)  评论(0)  编辑  收藏  举报