Javascript 溢出:隐藏。在js/jquery中,比较隐藏文本和可见文本

Javascript 溢出:隐藏。在js/jquery中,比较隐藏文本和可见文本,javascript,jquery,Javascript,Jquery,如果我有一个如下所示的overflow:hidden容器,有没有办法通过js/jquery找出哪些文本是可见的,哪些文本是隐藏的 div{ height:2.4em; line-height:1.2em; overflow:hidden; width:100px; background:pink; } <div> I am some text and more text and so on and on I just keep

如果我有一个如下所示的overflow:hidden容器,有没有办法通过js/jquery找出哪些文本是可见的,哪些文本是隐藏的

div{
    height:2.4em;
    line-height:1.2em;
    overflow:hidden;
    width:100px;
    background:pink;   
}

<div>
    I am some text and more text and so on and on I just keep going.
</div>
div{
高度:2.4em;
线高:1.2米;
溢出:隐藏;
宽度:100px;
背景:粉红色;
}
我是一些文字和更多的文字等等,我只是继续。
我只知道我有什么:

<div>
    <span>I am some text and more text and so on and on I just keep going.</span>
</div>

我是一些文字和更多的文字等等,我只是继续。

然后删除字母,直到span大于div:p(您可以使用
元素。offsetHeight
元素。offsetWidth
$(元素)。height
$(元素)。width

考虑到包装和行高,棘手的部分是找出一个单词的适合程度。编写了一个小jquery插件。这是片段

$.fn.visibleText = function () {
    // Get the currents
    var currWidth = this.width();
    var currHeight = this.height();
    var htmlContent = this.html();


    var lineHeight = parseFloat(this.css("lineHeight"), 10);
    // Need to calculate the number of lines visible
    // as currHeight < numLines * lineHeight, at times
    // Eg: Try changing height to 4.4em and width to 110px
    var numLines = Math.round(currHeight / lineHeight);
    var actualHeight = (numLines * lineHeight);

    // Clearing
    this.html("");
    this.height("initial");

    // Push to HTML until hitting the terminating conditions
    // currWordLength is required since wrapping of a word could push
    // to the line
    var vContent = "",
        currWordLength = 0;
    while (this.height() <= actualHeight) {
        var currChar = htmlContent[vContent.length];
        vContent += currChar;
        this.html(vContent);
        if (currChar === " ") {
            currWordLength = 0;
        }
        currWordLength++;
        if (htmlContent.length === vContent.length) {
            currWordLength = 0;
            break;
        }
    }
    var visible = vContent.substring(0, vContent.length - currWordLength);

    // Revert to originals
    this.height(currHeight);
    this.html(htmlContent);
    return {
        visible: visible,
        hidden: htmlContent.substring(visible.length, htmlContent.length)
    }
};
$.fn.visibleText=函数(){
//了解潮流
var currWidth=this.width();
var currHeight=this.height();
var htmlContent=this.html();
var lineHeight=parseFloat(this.css(“lineHeight”),10);
//需要计算可见的行数
//有时,当currenheight