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HW<15>start

Gennadysht %!s(int64=2) %!d(string=hai) anos
pai
4973d7edc9
achega
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Modificáronse 3 ficheiros con 204 adicións e 0 borrados
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  1. 66 0
      js/15_Recurs/hw_15_01_HTML_Tree.html
  2. 70 0
      js/15_Recurs/hw_15_02_DOOM_Tree.html
  3. 68 0
      js/15_Recurs/hw_15_03_DEEP copy.html

+ 66 - 0
js/15_Recurs/hw_15_01_HTML_Tree.html
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@@ -0,0 +1,66 @@
 
+<header>
 
+    HTML Tree
 
+</header>
 
+
 
+<body>
 
+    <script>
 
+        function walker(parent) {
 
+            let str = "";
 
+            let tagName = parent.tagName;
 
+            if (tagName) {
 
+                str = `<${tagName}`;
 
+                let attrs = parent.attrs;
 
+                if (attrs) {
 
+                    for (const attrName in attrs) {
 
+                        str += ` ${attrName}=${attrs[attrName]}`;
 
+                    }
 
+                }
 
+                str += '>';
 
+                for (const child of parent.children) {
 
+                    str += walker(child) //вложенный вызов - вложенный уровень вложенности :-D
 
+                }
 
+                str += `</${tagName}>`;
 
+            }
 
+            else {
 
+                str = parent;
 
+            }
 
+            return str;
 
+        }
 
+        const table = {
 
+            tagName: 'table',
 
+            attrs: {
 
+                border: "1",
 
+            },
 
+            children: [
 
+                {
 
+                    tagName: 'tr',
 
+                    children: [
 
+                        {
 
+                            tagName: "td",
 
+                            children: ["1x1"],
 
+                        },
 
+                        {
 
+                            tagName: "td",
 
+                            children: ["1x2"],
 
+                        },
 
+                    ]
 
+                },
 
+                {
 
+                    tagName: 'tr',
 
+                    children: [
 
+                        {
 
+                            tagName: "td",
 
+                            children: ["2x1"],
 
+                        },
 
+                        {
 
+                            tagName: "td",
 
+                            children: ["2x2"],
 
+                        },
 
+                    ]
 
+                }
 
+            ]
 
+        }
 
+        document.write(walker(table)); //вернет <table border='1' ....
 
+
 
+    </script>
 
+</body>

+ 70 - 0
js/15_Recurs/hw_15_02_DOOM_Tree.html
Ver ficheiro 

@@ -0,0 +1,70 @@
 
+<header>
 
+    DOM Tree
 
+</header>
 
+
 
+<body>
 
+    <script>
 
+        function walker(parent) {
 
+            let res = undefined;
 
+            let tagName = parent.tagName;
 
+            if (tagName) {
 
+                res = document.createElement(tagName);
 
+                let attrs = parent.attrs;
 
+                if (attrs) {
 
+                    for (const attrName in attrs) {
 
+                        res[attrName] = attrs[attrName];
 
+                    }
 
+                }
 
+                for (const child of parent.children) {
 
+                    let childRes = walker(child)
 
+                    if (typeof childRes === "object") {
 
+                        res.append(childRes);
 
+                    }
 
+                    else {
 
+                        res.innerText = childRes;
 
+                    }
 
+                }
 
+            }
 
+            else {
 
+                res = parent;
 
+            }
 
+            return res;
 
+        }
 
+        const table = {
 
+            tagName: 'table',
 
+            attrs: {
 
+                border: "1",
 
+            },
 
+            children: [
 
+                {
 
+                    tagName: 'tr',
 
+                    children: [
 
+                        {
 
+                            tagName: "td",
 
+                            children: ["1x1"],
 
+                        },
 
+                        {
 
+                            tagName: "td",
 
+                            children: ["1x2"],
 
+                        },
 
+                    ]
 
+                },
 
+                {
 
+                    tagName: 'tr',
 
+                    children: [
 
+                        {
 
+                            tagName: "td",
 
+                            children: ["2x1"],
 
+                        },
 
+                        {
 
+                            tagName: "td",
 
+                            children: ["2x2"],
 
+                        },
 
+                    ]
 
+                }
 
+            ]
 
+        }
 
+        document.body.append(walker(table)); //вернет <table border='1' ....
 
+
 
+    </script>
 
+</body>

+ 68 - 0
js/15_Recurs/hw_15_03_DEEP copy.html
Ver ficheiro 

@@ -0,0 +1,68 @@
 
+<header>
 
+    DOM Tree
 
+</header>
 
+
 
+<body>
 
+    <script>
 
+        function walker(parent) {
 
+            let res = undefined;
 
+            let isObject = true;
 
+            if (Array.isArray(parent)) {
 
+                res = [];
 
+            }
 
+            else if (parent != null && typeof parent === "object") {
 
+                res = {};
 
+            }
 
+            else {
 
+                res = parent;
 
+                isObject = false;
 
+            }
 
+            if (isObject) {
 
+                for (el in parent) {
 
+                    res[el] = walker(parent[el]);
 
+                }
 
+            }
 
+            return res;
 
+        }
 
+        const table = {
 
+            tagName: 'table',
 
+            attrs: {
 
+                border: "1",
 
+            },
 
+            children: [
 
+                {
 
+                    tagName: 'tr',
 
+                    children: [
 
+                        {
 
+                            tagName: "td",
 
+                            children: ["1x1"],
 
+                        },
 
+                        {
 
+                            tagName: "td",
 
+                            children: ["1x2"],
 
+                        },
 
+                    ]
 
+                },
 
+                {
 
+                    tagName: 'tr',
 
+                    children: [
 
+                        {
 
+                            tagName: "td",
 
+                            children: ["2x1"],
 
+                        },
 
+                        {
 
+                            tagName: "td",
 
+                            children: ["2x2"],
 
+                        },
 
+                    ]
 
+                }
 
+            ]
 
+        }
 
+        // document.body.append(walker(table)); //вернет <table border='1' ....
 
+
 
+        const arr = [1, "string", null, undefined, { a: 15, b: 10, c: [1, 2, 3, 4], d: undefined, e: true }, true, false]
 
+        const arr2 = walker(arr) //arr2 и все его вложенные массивы и объекты - другие объекты, которые можно менять без риска поменять что-то в arr
 
+        const table2 = walker(table) //аналогично
 
+
 
+    </script>
 
+</body>