114 lines
3.0 KiB
JavaScript
114 lines
3.0 KiB
JavaScript
(function () {
|
|
'use strict';
|
|
/* global info, jugl */
|
|
let template, target;
|
|
|
|
function listExamples(examples) {
|
|
target.innerHTML = '';
|
|
template.process({
|
|
context: {examples: examples},
|
|
clone: true,
|
|
parent: target,
|
|
});
|
|
document.getElementById('count').innerHTML = ' ' + examples.length + ' ';
|
|
}
|
|
|
|
let timerId;
|
|
function inputChange() {
|
|
if (timerId) {
|
|
window.clearTimeout(timerId);
|
|
}
|
|
const text = this.value;
|
|
timerId = window.setTimeout(function () {
|
|
filterList(text);
|
|
}, 500);
|
|
}
|
|
|
|
function getMatchingExamples(text) {
|
|
text = text.trim();
|
|
if (text.length === 0) {
|
|
return info.examples;
|
|
}
|
|
const words = text.toLowerCase().split(/\W+/);
|
|
const scores = {};
|
|
const updateScores = function (dict, word) {
|
|
// eslint-disable-next-line prefer-const
|
|
for (let exIndex in dict) {
|
|
let exScore = scores[exIndex];
|
|
if (!exScore) {
|
|
exScore = {};
|
|
scores[exIndex] = exScore;
|
|
}
|
|
exScore[word] = (exScore[word] || 0) + dict[exIndex];
|
|
}
|
|
};
|
|
words.forEach(function (word) {
|
|
const dict = info.index[word];
|
|
if (dict) {
|
|
updateScores(dict, word);
|
|
} else {
|
|
const r = new RegExp(word);
|
|
// eslint-disable-next-line prefer-const
|
|
for (let idx in info.index) {
|
|
if (r.test(idx)) {
|
|
updateScores(info.index[idx], word);
|
|
}
|
|
}
|
|
}
|
|
});
|
|
const examples = [];
|
|
// eslint-disable-next-line prefer-const
|
|
for (let exIndex in scores) {
|
|
const ex = info.examples[exIndex];
|
|
ex.score = 0;
|
|
ex.words = 0;
|
|
// eslint-disable-next-line prefer-const
|
|
for (let word in scores[exIndex]) {
|
|
ex.score += scores[exIndex][word];
|
|
ex.words++;
|
|
}
|
|
examples.push(ex);
|
|
}
|
|
// sort examples, first by number of words matched, then
|
|
// by word frequency
|
|
examples.sort(function (a, b) {
|
|
return a.score - b.score || a.words - b.words;
|
|
});
|
|
return examples;
|
|
}
|
|
|
|
function filterList(text) {
|
|
const examples = getMatchingExamples(text);
|
|
listExamples(examples);
|
|
}
|
|
|
|
function parseParams() {
|
|
const params = {};
|
|
const list = window.location.search
|
|
.substring(1)
|
|
.replace(/\+/g, '%20')
|
|
.split('&');
|
|
for (let i = 0; i < list.length; ++i) {
|
|
const pair = list[i].split('=');
|
|
if (pair.length === 2) {
|
|
params[decodeURIComponent(pair[0])] = decodeURIComponent(pair[1]);
|
|
}
|
|
}
|
|
return params;
|
|
}
|
|
|
|
window.addEventListener('load', function () {
|
|
for (let i = 0; i < info.examples.length; ++i) {
|
|
info.examples[i].link += window.location.search;
|
|
}
|
|
template = new jugl.Template('template');
|
|
target = document.getElementById('examples');
|
|
const params = parseParams();
|
|
const text = params['q'] || '';
|
|
const input = document.getElementById('keywords');
|
|
input.addEventListener('input', inputChange);
|
|
input.value = text;
|
|
filterList(text);
|
|
});
|
|
})();
|