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expert.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Expert System</title>
<style>
.whole {
width: 100%;
}
.whole td {
width: calc(100% / 4);
vertical-align: top;
}
.function {
width: 80%;
height: 100px;
margin: 20px 0;
}
.fields {
text-align: center;
/* background-color:bisque; */
padding: 30px 0;
}
.fields button {
width: 70px;
}
.rule {
font-weight: bold;
}
</style>
</head>
<body>
<table class="whole">
<tr id="display">
<td id="rulesDisplay">
<h1>Rules</h1>
<ul id="rulesList">
</ul>
</td>
<td id="factsDisplay">
<h1>Facts</h1>
<ul id="factsList">
<li>fact 1</li>
<li>fact 2</li>
</ul>
</td>
<td id="resultsDisplay">
<h1>Results</h1>
<ul id="resultsList">
<li>result 1</li>
<li>result 2</li>
</ul>
</td>
<td id="function">
<button id="addRulesButton" class="function"><b>Reset</b> and add other rules</button>
<button id="addFactsButton" class="function">add facts</button>
<button id="resetButton" class="function">reset</button>
<div id="fields" class="fields">
<div id="rulesField">
<div id="condition">
输入前提:
<div id="conditionInput">
<input type="text">
</div>
<button id="addConditionButton">AND</button><br>
</div>
<div id="result">
输入结论:<br>
<input type="text" id="conclusion">
</div>
<button id="addARuleButton">add</button><br>
<button id="addRulesDone">done</button>
</div>
<div id="factsField">
输入事实:<br>
<input type="text" id="factInputField">
<button id="addAFactButton">add</button><br>
<button id="addFactsDone">done</button>
</div>
</div>
</td>
</tr>
</table>
<script>
function Rule(conditions, conclusion) {
this.conditions = conditions;
this.conclusion = conclusion;
this.counter = conditions.size;
}
let rulesSet = new Set();
let factsSet = new Set();
let rulesList = document.querySelector('#rulesList')
let factsList = document.querySelector('#factsList')
let resultsList = document.querySelector('#resultsList')
let functionField = document.querySelector('#function');
// rules
let addRulesButton = document.querySelector('#addRulesButton');
let addConditionButton = document.querySelector('#addConditionButton');
let conditionInputList = document.querySelector('#conditionInput');
let addRulesDone = document.querySelector('#addRulesDone');
let conclusion = document.querySelector('#conclusion');
// facts
let addFactsButton = document.querySelector('#addFactsButton');
let factInputField = document.querySelector('#factInputField');
// reset
let resetButton = document.querySelector('#resetButton');
let rulesField = document.querySelector('#rulesField');
let factsField = document.querySelector('#factsField');
// add rules
addRulesButton.addEventListener('click', function () {
resetButton.click();
addRulesButton.disabled = true;
addFactsButton.disabled = true;
resetButton.disabled = true;
fields.append(rulesField);
while (conditionInputList.hasChildNodes()) {
conditionInputList.removeChild(conditionInputList.lastChild);
}
conditionInputList.append(document.createElement('input'));
conclusion.value = '';
});
document.querySelector('#addARuleButton').addEventListener('click', function () {
// <li>
// <span class="rule">rule:</span><br>
// conditions:
// <ul>
// <li>有毛发</li>
// </ul>
// result:
// <ul>
// <li>是哺乳动物</li>
// </ul>
// </li>
let newRuleDisplay = `
<span class="rule">rule:</span><br>
conditions:
<ul>
`
let newConditions = new Set();
for (let ruleInput of conditionInputList.childNodes) {
if (ruleInput.nodeName !== 'INPUT') {
continue;
}
newConditions.add(ruleInput.value);
newRuleDisplay += `<li>${ruleInput.value}</li>`;
}
newRuleDisplay+=`
</ul>
result:
<ul>
<li>${conclusion.value}</li>
</ul>
`;
let newRuleDisplayNode = document.createElement('li');
newRuleDisplayNode.innerHTML = newRuleDisplay;
rulesList.append(newRuleDisplayNode);
rulesSet.add(new Rule(newConditions, conclusion.value));
while (conditionInputList.hasChildNodes()) {
conditionInputList.removeChild(conditionInputList.lastChild);
}
conditionInputList.append(document.createElement('input'));
conclusion.value = '';
});
document.querySelector('#addConditionButton').addEventListener('click', function() {
conditionInputList.append(document.createElement('br'));
conditionInputList.append(document.createElement('input'));
});
addRulesDone.addEventListener('click', function () {
rulesField.remove();
addRulesButton.disabled = false;
addFactsButton.disabled = false;
resetButton.disabled = false;
});
rulesField.remove();
// add facts
addFactsButton.addEventListener('click', function () {
addRulesButton.disabled = true;
addFactsButton.disabled = true;
resetButton.disabled = true;
factInputField.value = '';
fields.append(factsField);
})
document.querySelector('#addAFactButton').addEventListener('click', function() {
let aFactText = document.querySelector('#factInputField').value;
if (!factsSet.has(aFactText)) {
let toProcessQ = [aFactText];
let newFact = document.createElement('li');
newFact.textContent = aFactText;
let newFactNode = document.createElement('li');
newFactNode.innerHTML = (`
<li>${aFactText}</li>
`)
factsList.appendChild(newFactNode);
let newResultNode;
while (toProcessQ.length !== 0) {
let toProcessFact = toProcessQ.pop();
newResultNode = document.createElement('li');
newResultNode.innerHTML = (`
<li>${toProcessFact}</li>
`)
resultsList.append(newResultNode);
if (factsSet.has(toProcessFact)) {
continue;
} else {
factsSet.add(toProcessFact);
}
for (let aRule of rulesSet) {
if (aRule.conditions.has(toProcessFact)) {
--aRule.counter;
if (aRule.counter === 0) {
toProcessQ.push(aRule.conclusion);
rulesSet.delete(aRule);
}
}
}
}
}
document.querySelector('#factInputField').value = '';
})
document.querySelector('#addFactsDone').addEventListener('click', function () {
factsField.remove();
addRulesButton.disabled = false;
addFactsButton.disabled = false;
resetButton.disabled = false;
});
factsField.remove();
//reset
resetButton.addEventListener('click', function () {
// reset rules
while (rulesList.hasChildNodes()) {
rulesList.removeChild(rulesList.lastChild);
}
// reset facts
while (factsList.hasChildNodes()) {
factsList.removeChild(factsList.lastChild);
}
// reset results
while (resultsList.hasChildNodes()) {
resultsList.removeChild(resultsList.lastChild);
}
init();
})
// initiation
function init() {
rulesSet.clear();
factsSet.clear();
rulesSet.add(new Rule(new Set().add('有毛发'), '是哺乳动物'));
rulesSet.add(new Rule(new Set().add('有奶'), '是哺乳动物'));
rulesSet.add(new Rule(new Set().add('有羽毛'), '是鸟'));
rulesSet.add(new Rule(new Set().add('会飞').add('下蛋'), '是鸟'));
rulesSet.add(new Rule(new Set().add('吃肉'), '是肉食动物'));
rulesSet.add(new Rule(new Set().add('犬齿').add('有爪').add('眼盯前方'), '是肉食动物'));
rulesSet.add(new Rule(new Set().add('是哺乳动物').add('有蹄'), '是蹄类动物'));
rulesList.innerHTML = `
<li>
<span class="rule">rule:</span><br>
conditions:
<ul>
<li>有毛发</li>
</ul>
result:
<ul>
<li>是哺乳动物</li>
</ul>
</li>
<li>
<span class="rule">rule:</span><br>
conditions:
<ul>
<li>有奶</li>
</ul>
result:
<ul>
<li>是哺乳动物</li>
</ul>
</li>
<li>
<span class="rule">rule:</span><br>
conditions:
<ul>
<li>有羽毛</li>
</ul>
result:
<ul>
<li>是鸟</li>
</ul>
</li>
<li>
<span class="rule">rule:</span><br>
conditions:
<ul>
<li>会飞</li>
<li>下蛋</li>
</ul>
result:
<ul>
<li>是鸟</li>
</ul>
</li>
<li>
<span class="rule">rule:</span><br>
conditions:
<ul>
<li>吃肉</li>
</ul>
result:
<ul>
<li>是肉食动物</li>
</ul>
</li>
<li>
<span class="rule">rule:</span><br>
conditions:
<ul>
<li>犬齿</li>
<li>有爪</li>
<li>眼盯前方</li>
</ul>
result:
<ul>
<li>是肉食动物</li>
</ul>
</li>
<li>
<span class="rule">rule:</span><br>
conditions:
<ul>
<li>是哺乳动物</li>
<li>有蹄</li>
</ul>
result:
<ul>
<li>是蹄类动物</li>
</ul>
</li>
`;
}
function addRule(conditions, result) {
// <span class="rule">rule:</span><br>
// conditions:
// <ul>
// <li>condition 1</li>
// <li>condition 2</li>
// </ul>
// result:
// <ul>
// <li>result</li>
// </ul>
let aFact = document.createElement('li');
let something = document.createElement('span');
something.setAttribute('class', 'rule');
something.textContent = 'rule:';
aFact.appendChild(something);
aFact.appendChild(document.createElement('br'));
aFact.append('conditions:');
let conditionsList = document.createElement('ul');
for (const conditionContent of conditions) {
let aCondition = document.createElement('li');
aCondition.textContent = conditionContent;
conditionsList.appendChild();
}
aFact.appendChild(conditionsList);
afact.append('result:');
let resultList = document.createElement('ul');
let resulttt = document.createElement('li');
resulttt.textContent = result;
resultList.append(resulttt);
aFact.append(resultList);
}
init();
</script>
</body>
</html>