80 lines
3.6 KiB
JavaScript
80 lines
3.6 KiB
JavaScript
let isHighlight = localStorage.getItem('highlightChecked') !== 'false'; // default to true
|
||
|
||
function cancelBtnHandler() {
|
||
cancelHighlighting();
|
||
document.getElementById("text-content").removeEventListener("click", fillInWord, false);
|
||
document.getElementById("text-content").removeEventListener("touchstart", fillInWord, false);
|
||
document.getElementById("text-content").addEventListener("click", fillInWord2, false);
|
||
document.getElementById("text-content").addEventListener("touchstart", fillInWord2, false);
|
||
}
|
||
|
||
function showBtnHandler() {
|
||
document.getElementById("text-content").removeEventListener("click", fillInWord2, false);
|
||
document.getElementById("text-content").removeEventListener("touchstart", fillInWord2, false);
|
||
document.getElementById("text-content").addEventListener("click", fillInWord, false);
|
||
document.getElementById("text-content").addEventListener("touchstart", fillInWord, false);
|
||
highLight();
|
||
}
|
||
|
||
function getWord() {
|
||
return window.getSelection ? window.getSelection() : document.selection.createRange().text;
|
||
}
|
||
|
||
function highLight() {
|
||
if (!isHighlight) return;
|
||
let articleContent = document.getElementById("article").innerHTML; // innerHTML保留HTML标签来保持部分格式，且适配不同的浏览器
|
||
let pickedWords = document.getElementById("selected-words"); // words picked to the text area
|
||
let dictionaryWords = document.getElementById("selected-words2"); // words appearing in the user's new words list
|
||
let allWords = dictionaryWords === null ? pickedWords.value + " " : pickedWords.value + " " + dictionaryWords.value;
|
||
const list = allWords.split(" "); // 将所有的生词放入一个list中
|
||
let totalSet = new Set();
|
||
for (let i = 0; i < list.length; ++i) {
|
||
list[i] = list[i].replace(/(^\W*)|(\W*$)/g, ""); // 消除单词两边的非单词字符
|
||
if (list[i] != "" && !totalSet.has(list[i])) {
|
||
// 返回所有匹配单词的集合, 正则表达式RegExp()中, "\b"匹配一个单词的边界, g 表示全局匹配, i 表示对大小写不敏感。
|
||
let matches = new Set(articleContent.match(new RegExp("\\b" + list[i] + "\\b", "gi")));
|
||
if (matches.has("mark")) {
|
||
// 优先处理单词为 "mark" 的情况
|
||
totalSet = new Set(["mark", ...totalSet]);
|
||
}
|
||
totalSet = new Set([...totalSet, ...matches]);
|
||
}
|
||
}
|
||
// 删除所有的mark标签,防止标签发生嵌套
|
||
articleContent = articleContent.replace(/<(mark)[^>]*>/gi, "");
|
||
articleContent = articleContent.replace(/<(\/mark)[^>]*>/gi, "");
|
||
// 将文章中所有出现该单词word的地方改为："<mark>" + word + "<mark>"。
|
||
for (let word of totalSet) {
|
||
articleContent = articleContent.replace(new RegExp("\\b" + word + "\\b", "g"), "<mark>" + word + "</mark>");
|
||
}
|
||
document.getElementById("article").innerHTML = articleContent;
|
||
$('mark').css('padding', 0);
|
||
}
|
||
|
||
function cancelHighlighting() {
|
||
let articleContent = document.getElementById("article").innerHTML;
|
||
articleContent = articleContent.replace(/<(mark)[^>]*>/gi, "");
|
||
articleContent = articleContent.replace(/<(\/mark)[^>]*>/gi, "");
|
||
document.getElementById("article").innerHTML = articleContent;
|
||
}
|
||
|
||
function fillInWord() {
|
||
highLight();
|
||
}
|
||
|
||
function fillInWord2() {
|
||
cancelHighlighting();
|
||
}
|
||
|
||
function toggleHighlighting() {
|
||
if (isHighlight) {
|
||
isHighlight = false;
|
||
cancelHighlighting();
|
||
} else {
|
||
isHighlight = true;
|
||
highLight();
|
||
}
|
||
localStorage.setItem('highlightChecked', isHighlight);
|
||
}
|
||
|
||
showBtnHandler(); |