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@@ -1,198 +0,0 @@
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-Literals
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-const cat =
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-{
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- "head":
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- {
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- "name": "cat's head",
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- "ears": [{"name":"ear", "attrs":{"position":"left"}}, {"name":"ear", "attrs":{"position":"right"}}],
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- "eyes": [{"name":"eye", "attrs":{"position":"left"}}, {"name":"eye", "attrs":{"position":"right"}}],
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- "mouth": "cat's"
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- },
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- "body":
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- {
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- "name": "body",
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- "paws":
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- [
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- {"name":"paw", "attrs":{"position":"left", "placement": "front"}},
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- {"name":"paw", "attrs":{"position":"right", "placement": "front"}},
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- {"name":"paw", "attrs":{"position":"left", "placement": "rear"}},
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- {"name":"paw", "attrs":{"position":"right", "placement": "rear"}},
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- ],
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- "tail": "cat's tail"
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- }
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-}
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-Literals expand
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-cat[prompt("Enter property name")]=prompt("Enter property value");
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-cat[prompt("Enter property name")]=prompt("Enter property value");
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-Literals copy
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-не понял задания
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-
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-html =
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- {
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- "tagName": "body",
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- "children": [
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- {
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- "tagname": "div",
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- "children": [
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- {
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- "tagName": "span",
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- "children": [
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- "Enter a data please:"
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- ],
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-
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- },
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- {
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- "tagName": "br"
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- },
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- {
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- "tagName": "input",
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- "attrs": {
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- "type": "text",
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- "id": "name"
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- }
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- },
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- {
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- "tagName": "input",
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- "attrs": {
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- "type": "text",
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- "id": "surname"
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- }
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- }
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- ]
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- },
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- {
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- "tagName": "div",
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- "children": [
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- {
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- "tagName": "button",
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- "attrs": {
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- "id": "ok"
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- },
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- "children": [
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- "OK"
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- ]
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- },
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- {
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- "tagName": "button",
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- "attrs": {
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- "id": "cancel"
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- },
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- "children": [
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- "Cancel"
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- ]
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- }
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- ]
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- }
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- ]
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- }
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-
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-
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-Html tree
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-html.children[1].children[1].children[0]
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-'Cancel'
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-html.children[0].children[3].attrs.id
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-'surname'
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-
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-Parent
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-html.children[0].parent=html
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-html.children[1].parent=html
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-html.children[0].children[0].parent=html.children[0]
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-html.children[0].children[1].parent=html.children[0]
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-html.children[0].children[2].parent=html.children[0]
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-html.children[0].children[3].parent=html.children[0]
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-html.children[0].children[2].attrs.parent=html.children[0].children[2]
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-html.children[0].children[3].attrs.parent=html.children[0].children[3]
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-html.children[1].children[0].parent=html.children[1]
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-html.children[1].children[1].parent=html.children[1]
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-html.children[1].children[0].attrs.parent=html.children[1].children[0]
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-html.children[1].children[1].attrs.parent=html.children[1].children[1]
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-destruct array
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-[odd1, even1, odd2, even2, odd3, ...letters] = arr
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-destruct string
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-[number, [s1, s2, s3]] = arr
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-destruct 2
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-let {children: [{name: name1}, {name: name2}]} = obj
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-destruct 3
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-let {0: a, 1: b, length}=arr
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-Change OK
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-html.children[1].children[0].attrs.test = prompt("enter attribute value")
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-html.children[1].children[0].attrs[prompt("enter attribute name")] = prompt("enter attribute value")
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-Destructure
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-const {children: [{children: [{children}]}]}=html
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-Destruct array
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-let {0: odd1, 2: odd2, 4: odd3, 1: even1, 3: even2, ...letters} = arr
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-Destruct string
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-let {0: number, 1: {0: s1, 1: s2, 2: s3}} = arr
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-destruct 2
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-let {children: [{name: name1}, {name: name2}]} = obj //не вижу разницы в определении по сравнению с аналогичным выше
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-Destruct 3
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-let {0: a, 1: b, length}=arr //не вижу разницы в определении по сравнению с аналогичным выше
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-Form
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-obj = {
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- "Name":"chevrolet chevelle malibu",
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- "Cylinders":8,
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- "Displacement":307,
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- "Horsepower":130,
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- "Weight_in_lbs":3504,
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- "Origin":"USA",
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- "in_production": false
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-}
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-const typesMap = {'boolean':'checkbox', 'number':'number', 'string':'text'};
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-let str="<form>\n"
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-for (var name in obj){
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- value = obj[name];
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- type = typeof value;
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- htmlType = typesMap[type];
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- if(htmlType=='text' && !isNaN(+value))
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- htmlType = typesMap['number']
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- str += ` <label>${name}: <input type="${htmlType}" value="${obj[name]}" /></label>\n`;
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-}
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- str+="<form>"
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-document.write(str)
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-alert(str)
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-Table //Эту уже не успеваю писать for-ы - решил в 4 строчки. попробуй посмотреть, завтра объясню
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-var arr = [
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- {
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- "Name":"chevrolet chevelle malibu",
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- "Cylinders":8,
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- "Displacement":307,
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- "Horsepower":130,
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- "Weight_in_lbs":3504,
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- "Origin":"USA"
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- },
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- {
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- "Name":"buick skylark 320",
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- "Miles_per_Gallon":15,
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- "Cylinders":8,
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- "Displacement":350,
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- "Horsepower":165,
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- "Weight_in_lbs":3693,
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- "Acceleration":11.5,
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- "Year":"1970-01-01",
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- },
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- {
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- "Miles_per_Gallon":18,
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- "Cylinders":8,
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- "Displacement":318,
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- "Horsepower":150,
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- "Weight_in_lbs":3436,
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- "Year":"1970-01-01",
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- "Origin":"USA"
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- },
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- {
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- "Name":"amc rebel sst",
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- "Miles_per_Gallon":16,
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- "Cylinders":8,
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- "Displacement":304,
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- "Horsepower":150,
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- "Year":"1970-01-01",
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- "Origin":"USA"
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- },
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-]
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-names = Object.entries(arr.reduce((prev, next) => {return {...prev, ...next};} )).map(entry => entry[0]);
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-str = "<tr>"+names.map(name => `<td>${name}<td>`).join('')+"</tr>";
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-str += `<table>${arr.map(obj => `<tr>${names.map(name => `<td>${obj[name]||"-"}</td>`).join('')}</tr>`).join('')}</table>`
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-document.write(str)
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-
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-
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-
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