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我正在尝试制作一个页面,允许用户在单击一个单词后获得一个小的建议框(如一个非常小的弹出窗口),他可以在其中单击并选择他想要的同义词。
我不确定这可以用什么语言完成,可能是 javascript,但我没有找到任何例子。
html代码如下:
Original:
I <b class="synonyms" style="color:black;"
title="love|really like|really love">like</b> apples.
The result should be(after a user chooses synonyms):
I <b>{like|love}</b> apples.
<!DOCTYPE html>
<html>
<body>
<p>I <b id="demo">like</b> apples.</p>
<button onclick="choose()">Try it</button>
<script>
function choose() {
var synonym = prompt("Choose synonyms:", "like");
if (synonym != null) {
document.getElementById("demo").innerHTML =
"{" + "like" + "|" + synonym + "}";
}
}
</script>
</body>
</html>
最佳答案
...however I am not sure if there is a way to click on specific word (there could be more than one word in a sentence), and also is there way to style the suggestion box and add list of words to choose from by clicking on them.
<p>
I <i class="synonyms" title="love|really like|really love">like</i> apples.
I <i class="synonyms" title="love|relish|savor|enjoy|patronize|adore">like</i> oranges.
</p>
i
具有名为
synonyms
的类的元素.
var words = [].slice.call(document.querySelectorAll('i.synonyms'));
querySelectorAll
返回一个节点列表,因此将其转换为数组的最简单方法是调用
slice on array prototype .我们需要一个数组,以便我们稍后对其进行迭代。
<ul id="synonymMenu"></ul>
var menu = document.getElementById('synonymMenu');
words
中的单词在上面的第一步中。我们只是迭代和
add the event listener执行函数
manageMenu
.稍后我们将定义该函数。在此期间,我们还使用
setAttribute
将现有单词缓存在数据属性中以便以后使用它。 .
words.forEach(function(wrd) {
wrd.setAttribute('data-word', wrd.textContent);
wrd.addEventListener('click', manageMenu);
});
menu
中在上面的步骤 2 中。只需添加监听器即可执行函数
applySynonym
.稍后我们将定义该函数。
menu.addEventListener('click', applySynonym);
toggleMenu
与
hide
范围。稍后会定义这个函数。
document.body.addEventListener('click', function() {
toggleMenu('hide');
});
manageMenu
中定义我们在第 3 步中声明的函数。解释在代码注释中。
function manageMenu(e) {
// define variables
var synonyms, optn, link, position;
// clear existing list and then show the menu
clearMenu(); toggleMenu('show');
// cache the click event target to a variable to be used later
currentWord = e.target;
// get the position of word relative to viewport
position = currentWord.getBoundingClientRect();
// use that position to shift the popup menu near to the word
menu.style.top = position.top + 24 + 'px';
menu.style.left = position.left + 2 + 'px';
// extract title attribute, split by | and store in array
synonyms = currentWord.getAttribute('title').split('|');
// iterate array creating an li and anchor for each synonym
// createElement creates a new element
// appendChild adds an element to another
synonyms.forEach(function(syn) {
optn = document.createElement('li');
link = document.createElement('a');
link.setAttribute('href', '#'); link.textContent = syn;
// add anchor to li, and the li to the menu
optn.appendChild(link); menu.appendChild(optn);
});
// stop propagation of click, so that it doesn't go to body
e.stopPropagation();
}
applySynonym
中定义我们在步骤 4 中引用的函数。
function applySynonym(e) {
var txt = '';
// Because we added event listener to the parent ul element,
// we have to check if the clicked element is the anchor or not
if (e.target.tagName != 'A') { return false; }
// We retrieve the orginal text from the data attribute,
// which we cached in step 6 above. And append current anchor's text
txt += '{' + currentWord.getAttribute('data-word') + '|';
txt += e.target.textContent + '}';
// replace the text of the word
currentWord.textContent = txt;
toggleMenu('hide'); // hide the suggestion box menu
// stop propagation of click, so that it doesn't go to body
// prevent default so that clicking anchor doesn't jump to top
e.stopPropagation(); e.preventDefault();
}
function toggleMenu(mode) {
if (mode == 'show') { menu.style.display = 'block'; }
if (mode == 'hide') { menu.style.display = 'none'; }
}
function clearMenu() {
// we loop the child nodes of menu ul element,
// remove the last child (last li) of that ul element,
// until it does not has-child-nodes.
while (menu.hasChildNodes()) {
menu.removeChild(menu.lastChild);
}
}
ul#synonymMenu {
position: absolute; display: none;
...
border: 1px solid #bbb; background-color: #efefef;
}
(function() {
var menu = document.getElementById('synonymMenu'),
words = [].slice.call(document.querySelectorAll('i.synonyms')),
currentWord = null
;
words.forEach(function(wrd) {
wrd.setAttribute('data-word', wrd.textContent);
wrd.addEventListener('click', manageMenu);
});
menu.addEventListener('click', applySynonym);
document.body.addEventListener('click', function() {
toggleMenu('hide');
});
function manageMenu(e) {
var synonyms, optn, link, position;
clearMenu(); toggleMenu('show');
currentWord = e.target;
position = currentWord.getBoundingClientRect();
menu.style.top = position.top + 24 + 'px';
menu.style.left = position.left + 2 + 'px';
synonyms = currentWord.getAttribute('title').split('|');
synonyms.forEach(function(syn) {
optn = document.createElement('li');
link = document.createElement('a');
link.setAttribute('href', '#'); link.textContent = syn;
optn.appendChild(link); menu.appendChild(optn);
});
e.stopPropagation();
}
function applySynonym(e) {
var txt = '';
if (e.target.tagName != 'A') { return false; }
txt += '{' + currentWord.getAttribute('data-word') + '|';
txt += e.target.textContent + '}';
currentWord.textContent = txt;
toggleMenu('hide');
e.stopPropagation(); e.preventDefault();
}
function toggleMenu(mode) {
if (mode == 'show') { menu.style.display = 'block'; }
if (mode == 'hide') { menu.style.display = 'none'; }
}
function clearMenu() {
while (menu.hasChildNodes()) {
menu.removeChild(menu.lastChild);
}
}
})();
* { font-family: sans-serif; }
html, body { height: 100%; }
i.synonyms { cursor: pointer; color: #333; }
ul#synonymMenu {
position: absolute; display: none;
width: auto; max-height: 120px;
overflow: hidden; overflow-y: auto;
list-style: none; padding: 0; margin: 0;
border: 1px solid #bbb; background-color: #efefef;
box-shadow: 0px 0px 6px 1px rgba(128,128,128,0.3);
}
ul#synonymMenu > li { display: block; }
ul#synonymMenu a {
display: block; padding: 4px 20px 4px 6px;
color: #333; font-size: 0.9em; text-decoration: none;
}
ul#synonymMenu a:hover {
background-color: #99b;
}
<p>
I <i class="synonyms" title="love|really like|really love">like</i> apples.
I <i class="synonyms" title="love|relish|savor|enjoy|patronize|adore">like</i> oranges.
</p>
<ul id="synonymMenu"></ul>
(function() {
var menu = document.getElementById('synonymMenu'),
menuWrap = document.getElementById('menuWrapper'),
okButton = document.getElementById('synOk'),
words = [].slice.call(document.querySelectorAll('i.synonyms')),
currentWord = null
;
words.forEach(function(wrd) {
wrd.setAttribute('data-word', wrd.textContent);
wrd.addEventListener('click', manageMenu);
});
okButton.addEventListener('click', applySynonym);
document.body.addEventListener('click', function(e) {
if (isDescendant(menuWrapper, e.target)) {
return;
}
toggleMenu('hide');
});
function manageMenu(e) {
var synonyms, opt, lbl, chk, txt, position, existing;
clearMenu(); toggleMenu('show');
currentWord = e.target;
position = currentWord.getBoundingClientRect();
menuWrap.style.top = position.top + 20 + 'px';
menuWrap.style.left = position.left + 2 + 'px';
existing = currentWord.textContent;
synonyms = currentWord.getAttribute('title').split('|');
synonyms.forEach(function(syn) {
opt = document.createElement('li');
lbl = document.createElement('label');
chk = document.createElement('input');
chk.setAttribute('type', 'checkbox');
txt = document.createTextNode(syn);
lbl.appendChild(chk);
lbl.appendChild(txt);
opt.appendChild(lbl);
menu.appendChild(opt);
});
preSelect(existing);
e.stopPropagation();
}
function preSelect(existing) {
var labels = [].slice.call(menu.querySelectorAll('label'));
labels.forEach(function(lbl) {
if (existing.indexOf(lbl.textContent) > -1) {
lbl.firstChild.checked = true;
}
});
}
function applySynonym(e) {
var txt = '', labels, checked, selected;
labels = [].slice.call(menu.querySelectorAll('label'));
checked = labels.filter(function(lbl){
return lbl.firstChild.checked;
});
selected = checked.map(function(lbl){
return lbl.textContent;
}).join('|');
txt += '{' + currentWord.getAttribute('data-word') + '|';
txt += selected + '}';
currentWord.textContent = txt;
toggleMenu('hide');
e.stopPropagation();
}
function toggleMenu(mode) {
if (mode == 'show') { menuWrap.style.display = 'block'; }
if (mode == 'hide') { menuWrap.style.display = 'none'; }
}
function clearMenu() {
while (menu.hasChildNodes()) {
menu.removeChild(menu.lastChild);
}
}
function isDescendant(parent, child) {
var node = child.parentNode;
while (node != null) {
if (node == parent) {
return true;
}
node = node.parentNode;
}
return false;
}
})();
* { font-family: sans-serif; box-sizing: border-box; }
html, body { height: 100%; }
div.wrap {
border: 1px solid #ddd; max-height: 480px;
padding: 4px 22px 4px 4px; font-size: 0.9em;
overflow: hidden; overflow-y: auto;
}
i.synonyms { cursor: pointer; color: #333; }
div#menuWrapper {
position: absolute; display: none; width: 128px;
padding: 4px; margin: 0;
border: 1px solid #bbb; background-color: #efefef;
box-shadow: 0px 0px 6px 1px rgba(128,128,128,0.3);
}
ul#synonymMenu {
max-height: 120px;
overflow: hidden; overflow-y: auto;
list-style: none; padding: 0; margin: 0;
}
ul#synonymMenu > li { display: block; }
ul#synonymMenu label {
display: block; color: #333; font-size: 0.9em;
padding: 2px 18px 2px 4px;
}
ul#synonymMenu label:hover { background-color: #99b; }
button#synOk { padding: 2px; width: 100%; }
<div class="wrap">
<p>
I <i class="synonyms" title="love|relish|savor">like</i> apples. I <i class="synonyms" title="love|relish|savor|enjoy|patronize|adore">like</i> oranges. I <i class="synonyms" title="love|relish|savor">like</i> apples. I <i class="synonyms" title="love|relish|savor|enjoy|patronize|adore">like</i> oranges. I <i class="synonyms" title="love|relish|savor">like</i> apples. I <i class="synonyms" title="love|relish|savor|enjoy|patronize|adore">like</i> oranges. I <i class="synonyms" title="love|relish|savor">like</i> apples. I <i class="synonyms" title="love|relish|savor|enjoy|patronize|adore">like</i> oranges. I <i class="synonyms" title="love|relish|savor">like</i> apples. I <i class="synonyms" title="love|relish|savor|enjoy|patronize|adore">like</i> oranges. I <i class="synonyms" title="love|relish|savor">like</i> apples. I <i class="synonyms" title="love|relish|savor|enjoy|patronize|adore">like</i> oranges. I <i class="synonyms" title="love|relish|savor">like</i> apples. I <i class="synonyms" title="love|relish|savor|enjoy|patronize|adore">like</i> oranges. I <i class="synonyms" title="love|relish|savor">like</i> apples. I <i class="synonyms" title="love|relish|savor|enjoy|patronize|adore">like</i> oranges. I <i class="synonyms" title="love|relish|savor">like</i> apples. I <i class="synonyms" title="love|relish|savor|enjoy|patronize|adore">like</i> oranges.
</p>
<p>
I <i class="synonyms" title="love|relish|savor">like</i> apples. I <i class="synonyms" title="love|relish|savor|enjoy|patronize|adore">like</i> oranges. I <i class="synonyms" title="love|relish|savor">like</i> apples. I <i class="synonyms" title="love|relish|savor|enjoy|patronize|adore">like</i> oranges. I <i class="synonyms" title="love|relish|savor">like</i> apples. I <i class="synonyms" title="love|relish|savor|enjoy|patronize|adore">like</i> oranges. I <i class="synonyms" title="love|relish|savor">like</i> apples. I <i class="synonyms" title="love|relish|savor|enjoy|patronize|adore">like</i> oranges. I <i class="synonyms" title="love|relish|savor">like</i> apples. I <i class="synonyms" title="love|relish|savor|enjoy|patronize|adore">like</i> oranges. I <i class="synonyms" title="love|relish|savor">like</i> apples. I <i class="synonyms" title="love|relish|savor|enjoy|patronize|adore">like</i> oranges. I <i class="synonyms" title="love|relish|savor">like</i> apples. I <i class="synonyms" title="love|relish|savor|enjoy|patronize|adore">like</i> oranges. I <i class="synonyms" title="love|relish|savor">like</i> apples. I <i class="synonyms" title="love|relish|savor|enjoy|patronize|adore">like</i> oranges. I <i class="synonyms" title="love|relish|savor">like</i> apples. I <i class="synonyms" title="love|relish|savor|enjoy|patronize|adore">like</i> oranges.
</p>
<p>
I <i class="synonyms" title="love|relish|savor">like</i> apples. I <i class="synonyms" title="love|relish|savor|enjoy|patronize|adore">like</i> oranges. I <i class="synonyms" title="love|relish|savor">like</i> apples. I <i class="synonyms" title="love|relish|savor|enjoy|patronize|adore">like</i> oranges. I <i class="synonyms" title="love|relish|savor">like</i> apples. I <i class="synonyms" title="love|relish|savor|enjoy|patronize|adore">like</i> oranges. I <i class="synonyms" title="love|relish|savor">like</i> apples. I <i class="synonyms" title="love|relish|savor|enjoy|patronize|adore">like</i> oranges. I <i class="synonyms" title="love|relish|savor">like</i> apples. I <i class="synonyms" title="love|relish|savor|enjoy|patronize|adore">like</i> oranges. I <i class="synonyms" title="love|relish|savor">like</i> apples. I <i class="synonyms" title="love|relish|savor|enjoy|patronize|adore">like</i> oranges. I <i class="synonyms" title="love|relish|savor">like</i> apples. I <i class="synonyms" title="love|relish|savor|enjoy|patronize|adore">like</i> oranges. I <i class="synonyms" title="love|relish|savor">like</i> apples. I <i class="synonyms" title="love|relish|savor|enjoy|patronize|adore">like</i> oranges. I <i class="synonyms" title="love|relish|savor">like</i> apples. I <i class="synonyms" title="love|relish|savor|enjoy|patronize|adore">like</i> oranges.
</p>
</div>
<div id="menuWrapper">
<ul id="synonymMenu"></ul>
<hr/>
<button id="synOk">Ok</button>
</div>
关于javascript - 如何在带有文本的 Html 框中创建建议框(Javascript 中的提示框),我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/36049942/
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