93 lines
4.4 KiB
JavaScript
93 lines
4.4 KiB
JavaScript
let isHighlight = 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").innerText; //将原来的.innerText改为.innerHtml，使用innerText会把原文章中所包含的<br>标签去除，导致处理后的文章内容失去了原来的格式
|
||
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 = ""; //初始化allWords的值，避免进入判断后编译器认为allWords未初始化的问题
|
||
if(dictionaryWords != null){//增加一个判断，检查生词本里面是否为空，如果为空，allWords只添加选中的单词
|
||
allWords = pickedWords.value + " " + dictionaryWords.value;
|
||
}
|
||
else{
|
||
allWords = pickedWords.value + " ";
|
||
}
|
||
const list = allWords.split(" ");//将所有的生词放入一个list中，用于后续处理
|
||
for (let i = 0; i < list.length; ++i) {
|
||
list[i] = list[i].replace(/(^\s*)|(\s*$)/g, ""); //消除单词两边的空字符
|
||
list[i] = list[i].replace('|', "");
|
||
list[i] = list[i].replace('?', "");
|
||
if (list[i] !== "" && "<mark>".indexOf(list[i]) === -1 && "</mark>".indexOf(list[i]) === -1) {
|
||
//将文章中所有出现该单词word的地方改为：" <mark>" + word + "<mark> "。 正则表达式RegExp()中，"\\s"代表单词前后必须要有空格，以防止只对单词中的部分字符高亮的情况出现。
|
||
articleContent = articleContent.replace(new RegExp("\\s"+list[i]+"\\s", "g"), " <mark>" + list[i] + "</mark> ");
|
||
}
|
||
}
|
||
document.getElementById("article").innerHTML = articleContent;
|
||
}
|
||
|
||
function cancelHighlighting() {
|
||
let articleContent = document.getElementById("article").innerText;//将原来的.innerText改为.innerHtml，原因同上
|
||
let pickedWords = document.getElementById("selected-words");
|
||
const dictionaryWords = document.getElementById("selected-words2");
|
||
const list = pickedWords.value.split(" ");
|
||
if (pickedWords != null) {
|
||
for (let i = 0; i < list.length; ++i) {
|
||
list[i] = list[i].replace(/(^\s*)|(\s*$)/g, "");
|
||
if (list[i] !== "") { //原来判断的代码中，替换的内容为“list[i]”这个字符串，这明显是错误的，我们需要替换的是list[i]里的内容
|
||
articleContent = articleContent.replace(new RegExp("<mark>"+list[i]+"</mark>", "g"), list[i]);
|
||
}
|
||
}
|
||
}
|
||
if (dictionaryWords != null) {
|
||
let list2 = pickedWords.value.split(" ");
|
||
for (let i = 0; i < list2.length; ++i) {
|
||
list2 = dictionaryWords.value.split(" ");
|
||
list2[i] = list2[i].replace(/(^\s*)|(\s*$)/g, "");
|
||
if (list2[i] !== "") { //原来代码中，替换的内容为“list[i]”这个字符串，这明显是错误的，我们需要替换的是list[i]里的内容
|
||
articleContent = articleContent.replace(new RegExp("<mark>"+list2[i]+"</mark>", "g"), list2[i]);
|
||
}
|
||
}
|
||
}
|
||
document.getElementById("article").innerHTML = articleContent;
|
||
}
|
||
|
||
function fillInWord() {
|
||
highLight();
|
||
}
|
||
|
||
function fillInWord2() {
|
||
cancelHighlighting();
|
||
}
|
||
|
||
function toggleHighlighting() {
|
||
if (isHighlight) {
|
||
isHighlight = false;
|
||
cancelHighlighting();
|
||
} else {
|
||
isHighlight = true;
|
||
highLight();
|
||
}
|
||
}
|
||
|
||
showBtnHandler();
|