Javascript多个高亮文字不起作用

时间:2014-11-12 13:45:03

标签: javascript jquery find highlight

我正在尝试使用多种颜色突出显示文字。但文字并没有突出显示。下面给出的例子

<span class='classOne'>Hello there <span class='classTwo'>highlight not</span> working.</span>

对于单色,它可以正常工作,不适用于多种颜色。下面给出了我从谷歌搜索获得的源代码。

jQuery.fn.highlight = function (pat) {
    function innerHighlight(node, pat) {
        var skip = 0;
        if (node.nodeType == 3) {
            var pos = node.data.toUpperCase().indexOf(pat);
            if (pos >= 0) {
                var spannode = document.createElement('span');
                spannode.className = 'highlight';
                var middlebit = node.splitText(pos);
                var endbit = middlebit.splitText(pat.length);
                var middleclone = middlebit.cloneNode(true);
                spannode.appendChild(middleclone);
                middlebit.parentNode.replaceChild(spannode, middlebit);
                skip = 1;
            }
        } else if (node.nodeType == 1 && node.childNodes && !/(script|style)/i.test(node.tagName)) {
            for (var i = 0; i < node.childNodes.length; ++i) {
                i += innerHighlight(node.childNodes[i], pat);
            }
        }
        return skip;
    }
    return this.length && pat && pat.length ? this.each(function () {
        innerHighlight(this, pat.toUpperCase());
    }) : this;
};

jQuery.fn.removeHighlight = function () {
    return this.find("span.highlight").each(function () {
        this.parentNode.firstChild.nodeName;
        with(this.parentNode) {
            replaceChild(this.firstChild, this);
            normalize();
        }
    }).end();
};

1 个答案:

答案 0 :(得分:0)

当我这样做时它很有用。看看这个。

&#13;
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$.fn.highlight = function (pat) {
    function innerHighlight(node, pat) {
        var skip = 0;
        if (node.nodeType == 3) {
            var pos = node.data.toUpperCase().indexOf(pat);
            if (pos >= 0) {
                var spannode = document.createElement('span');
                spannode.className = 'highlight';
                var middlebit = node.splitText(pos);
                var endbit = middlebit.splitText(pat.length);
                var middleclone = middlebit.cloneNode(true);
                spannode.appendChild(middleclone);
                middlebit.parentNode.replaceChild(spannode, middlebit);
                skip = 1;
            }
        } else if (node.nodeType == 1 && node.childNodes && !/(script|style)/i.test(node.tagName)) {
            for (var i = 0; i < node.childNodes.length; ++i) {
                i += innerHighlight(node.childNodes[i], pat);
            }
        }
        return skip;
    }
    return this.length && pat && pat.length ? this.each(function () {
        innerHighlight(this, pat.toUpperCase());
    }) : this;
};

$.fn.removeHighlight = function () {
    return this.find("span.highlight").each(function () {
        this.parentNode.firstChild.nodeName;
        with(this.parentNode) {
            replaceChild(this.firstChild, this);
            normalize();
        }
    }).end();
};

$('.classOne').highlight('Hello');
$('.classTwo').highlight('highlight');
&#13;
.classOne .highlight {
    background-color: #FF0;
}

.classTwo .highlight {
    background-color: grey;
}
&#13;
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.0.0/jquery.min.js"></script>
<span class='classOne'>Hello there <span class='classTwo'>highlight</span> working now.</span>
&#13;
&#13;
&#13;

对于多色,您必须编写不同的CSS类,或者可以更新添加highlight类的逻辑以添加多个类以支持多色。