好的代码,只是想知道是否可以查询并获取省略号文本(即带有点而不是原始文本)?
如果我添加文字
这是一个长句
和(使用省略号的相关css)缩短为
这是一个长期的......
有没有办法获取文字
"This is a long sen ..."
来自$("p")
DOM对象而不是原始文本?
答案 0 :(得分:2)
尝试:
function getEllipsis(command, characters) {
for (var i = command.length; i >= 0; i--) {
if (command.substring(0, i).length < characters) {
if (i < command.length) {
command = command.substring(0, i) + "...";
}
return command;
}
}
}
console.log(getEllipsis("I am a long sentence",16))
console.log(getEllipsis("But I am even longer",20))
答案 1 :(得分:0)
我have a rough draft 需要一些特定于浏览器的调整。
JavaScript的:
jQuery.fn.getShowingText = function () {
// Add temporary element for measuring character widths
$('body').append('<div id="Test" style="padding:0;border:0;height:auto;width:auto;position:absolute;display:none;"></div>');
var longString = $(this).text();
var eleWidth = $(this).innerWidth();
var totalWidth = 0;
var totalString = '';
var finished = false;
var ellipWidth = $('#Test').html('…').innerWidth();
var offset = 7; // seems to differ based on browser (6 for Chrome and 7 for Firefox?)
for (var i = 0;
(i < longString.length) && ((totalWidth) < (eleWidth-offset)); i++) {
$('#Test').text(longString.charAt(i));
totalWidth += $('#Test').innerWidth();
totalString += longString.charAt(i);
if(i+1 === longString.length)
{
finished = true;
}
}
$('body').remove('#Test'); // Clean up temporary element
if(finished === false)
{
return totalString.substring(0,totalString.length-3)+"…";
}
else
{
return longString;
}
}
console.log($('#ellDiv').getShowingText());
CSS:
#Test {
padding:0;
border:0;
height: auto;
width: auto;
position:absolute;
white-space: pre;
}
div {
width: 100px;
white-space: nowrap;
border: 1px solid #000;
overflow:hidden;
text-overflow:ellipsis;
padding:0;
}
需要注意的是offset
需要根据浏览器进行更改,除非有人能够找出导致它的原因。
我怀疑是letter-spacing
还是类似的?