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Gennadysht 2 vuotta sitten
vanhempi
b90e3c0221
commit
0ed572ec19
5 muutettua tiedostoa jossa 199 lisäystä ja 1 poistoa
Jaettu näkymä Näytä diff tilastot
  1. 0 0
      js/15_Recurs/hw_15_02_DOM_Tree.html
  2. 1 1
      js/15_Recurs/hw_15_03_DEEP copy.html
  3. 76 0
      js/15_Recurs/hw_15_04_1_string .html
  4. 76 0
      js/15_Recurs/hw_15_04_string.html
  5. 46 0
      js/15_Recurs/hw_15_05_get.html

js/15_Recurs/hw_15_02_DOOM_Tree.html → js/15_Recurs/hw_15_02_DOM_Tree.html
Näytä tiedosto


+ 1 - 1
js/15_Recurs/hw_15_03_DEEP copy.html
Näytä tiedosto 

@@ -1,5 +1,5 @@
 
 <header>
 
-    DOM Tree
 
+    Deep Copy
 
 </header>
 
 
 <body>

+ 76 - 0
js/15_Recurs/hw_15_04_1_string .html
Näytä tiedosto 

@@ -0,0 +1,76 @@
 
+<header>
 
+    HTML Tree
 
+</header>
 
+
 
+<body>
 
+    <script>
 
+        function walker(parent) {
 
+            let str = "";
 
+            let tagName = parent.tagName;
 
+            if (tagName) {
 
+                str = '{';
 
+                str += `"tagName":"${tagName}",`;
 
+                let attrs = parent.attrs;
 
+                if (attrs) {
 
+                    str += '"attrs":{';
 
+                    let attrsArr = [];
 
+                    for (const attrName in attrs) {
 
+                        attrsArr.push(`"${attrName}":"${attrs[attrName]}"`);
 
+                    }
 
+                    str += attrsArr.join(',');
 
+                    str += '},';
 
+                }
 
+                if (parent.children) {
 
+                    str += '"children":['
 
+                    let childrenArr = [];
 
+                    for (const child of parent.children) {
 
+                        childrenArr.push(walker(child)); //вложенный вызов - вложенный уровень вложенности :-D
 
+                    }
 
+                    str += childrenArr.join(',');
 
+                    str += ']';
 
+                }
 
+                str += '}';
 
+            }
 
+            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"],
 
+                        },
 
+                    ]
 
+                }
 
+            ]
 
+        }
 
+        var objStr = walker(table);;
 
+        document.write(walker(objStr));
 
+    </script>
 
+</body>

+ 76 - 0
js/15_Recurs/hw_15_04_string.html
Näytä tiedosto 

@@ -0,0 +1,76 @@
 
+<header>
 
+    HTML Tree
 
+</header>
 
+
 
+<body>
 
+    <script>
 
+        function walker(parent) {
 
+            let str = "";
 
+            let tagName = parent.tagName;
 
+            if (tagName) {
 
+                str = '{';
 
+                str += `"tagName":"${tagName}",`;
 
+                let attrs = parent.attrs;
 
+                if (attrs) {
 
+                    str += '"attrs":{';
 
+                    let attrsArr = [];
 
+                    for (const attrName in attrs) {
 
+                        attrsArr.push(`"${attrName}":"${attrs[attrName]}"`);
 
+                    }
 
+                    str += attrsArr.join(',');
 
+                    str += '},';
 
+                }
 
+                if (parent.children) {
 
+                    str += '"children":['
 
+                    let childrenArr = [];
 
+                    for (const child of parent.children) {
 
+                        childrenArr.push(walker(child)); //вложенный вызов - вложенный уровень вложенности :-D
 
+                    }
 
+                    str += childrenArr.join(',');
 
+                    str += ']';
 
+                }
 
+                str += '}';
 
+            }
 
+            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"],
 
+                        },
 
+                    ]
 
+                }
 
+            ]
 
+        }
 
+        var objStr = walker(table);;
 
+        document.write(walker(objStr));
 
+    </script>
 
+</body>

+ 46 - 0
js/15_Recurs/hw_15_05_get.html
Näytä tiedosto 

@@ -0,0 +1,46 @@
 
+<header>
 
+    GetElementById Throw
 
+</header>
 
+
 
+<body>
 
+    <div id="xId">
 
+        <div id="testId">testDiv</div>
 
+    </div>
 
+    <script>
 
+        const getElementById = (parent, id) => {
 
+            try {
 
+                walker(parent, id);
 
+                return null;
 
+            }
 
+            catch (e) {
 
+                if (e.message == "Element found.")
 
+                    return e.result;
 
+                else
 
+                    throw e;
 
+            }
 
+        }
 
+        function walker(parent, id) {
 
+            let isObject = true;
 
+            if (Array.isArray(parent)) {
 
+            }
 
+            else if (parent != null && typeof parent === "object") {
 
+                if (parent.id == id) {
 
+                    let err = new Error("Element found.");
 
+                    err.result = parent;
 
+                    throw err;
 
+                }
 
+            }
 
+            else
 
+                isObject = false;
 
+            if (isObject) {
 
+                for (child of parent.children) {
 
+                    walker(child, id);
 
+                }
 
+            }
 
+        }
 
+        var children = xId.children;
 
+        var val = xId.value;
 
+        el = getElementById(document.body, "testId");
 
+        alert(el.innerText);
 
+    </script>
 
+</body>