97 lines
4.1 KiB
JavaScript
97 lines
4.1 KiB
JavaScript
let isHighlight = true;
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function cancelBtnHandler() {
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cancel_highLight();
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document.getElementById("text-content").removeEventListener("click", fillInWord, false);
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document.getElementById("text-content").removeEventListener("touchstart", fillInWord, false);
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document.getElementById("text-content").addEventListener("click", fillInWord2, false);
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document.getElementById("text-content").addEventListener("touchstart", fillInWord2, false);
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}
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function showBtnHandler() {
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document.getElementById("text-content").removeEventListener("click", fillInWord2, false);
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document.getElementById("text-content").removeEventListener("touchstart", fillInWord2, false);
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document.getElementById("text-content").addEventListener("click", fillInWord, false);
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document.getElementById("text-content").addEventListener("touchstart", fillInWord, false);
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highLight();
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}
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function getWord() {
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return window.getSelection ? window.getSelection() : document.selection.createRange().text;
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}
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function highLight() {
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if (!isHighlight) return;
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let articleContent = document.getElementById("article").innerText;
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let pickedWords = document.getElementById("selected-words"); // words picked to the text area
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let dictionaryWords = document.getElementById("selected-words2"); // words appearing in the user's new words list
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if (pickedWords != null) {
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const list = pickedWords.value.split(" ");
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for (let i = 0; i < list.length; ++i) {
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list[i] = list[i].replace(/(^\s*)|(\s*$)/g, ""); //消除字符串两边空字符
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if (list[i] !== "" && "<mark>".indexOf(list[i]) === -1 && "</mark>".indexOf(list[i]) === -1) {
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//将正则表达式进行修改 表示搜索的是两端带有空格的list[i] 那么搜索的便为一个完整单词 然后在mark标签的前后各加了一个空格对其进行替换
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articleContent = articleContent.replace(new RegExp("\\s"+list[i]+"\\s", "g"), " <mark>" + list[i] + "</mark> ");
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}
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}
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}
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if (dictionaryWords != null) {
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const list2 = dictionaryWords.value.split(" ");
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for (let i = 0; i < list2.length; ++i) {
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list2[i] = list2[i].replace(/(^\s*)|(\s*$)/g, "");
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if (list2[i] !== "" && "<mark>".indexOf(list2[i]) === -1 && "</mark>".indexOf(list2[i]) === -1) {
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//将正则表达式进行修改 表示搜索的是两端带有空格的list2[i] 那么搜索的便为一个完整单词 然后在mark标签的前后各加了一个空格对其进行替换
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articleContent = articleContent.replace(new RegExp("\\s"+list2[i]+"\\s", "g"), " <mark>" + list2[i] + "</mark> ");
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}
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}
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}
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document.getElementById("article").innerHTML = articleContent;
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}
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function cancel_highLight() {
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const list = pickedWords.value.split(" ");
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let articleContent = document.getElementById("article").innerText;
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let pickedWords = document.getElementById("selected-words");
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const dictionaryWords = document.getElementById("selected-words2");
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if (pickedWords != null) {
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for (let i = 0; i < list.length; ++i) {
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list[i] = list[i].replace(/(^\s*)|(\s*$)/g, "");
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if (list[i] !== "") {
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articleContent = articleContent.replace("<mark>" + list[i] + "</mark>", "list[i]");
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}
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}
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}
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if (dictionaryWords != null) {
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let list2 = pickedWords.value.split(" ");
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for (let i = 0; i < list2.length; ++i) {
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list2 = dictionaryWords.value.split(" ");
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list2[i] = list2[i].replace(/(^\s*)|(\s*$)/g, "");
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if (list2[i] !== "") {
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articleContent = articleContent.replace("<mark>" + list[i] + "</mark>", "list[i]");
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}
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}
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}
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document.getElementById("article").innerHTML = articleContent;
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}
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function fillInWord() {
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highLight();
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}
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function fillInWord2() {
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cancel_highLight();
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}
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function ChangeHighlight() {
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if (isHighlight) {
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isHighlight = false;
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cancel_highLight();
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} else {
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isHighlight = true;
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highLight();
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}
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}
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showBtnHandler();
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