突出显示 Html 文档中不同标签的文本

我是新来的角js。现在我正在突出显示 HTML 文档中的文本。

So, 我的代码是这样的：

var InstantSearch = {

    "highlight": function (container, highlightText)
    {
        var internalHighlighter = function (options)
        {

            var id = {
                container: "container",
                tokens: "tokens",
                all: "all",
                token: "token",
                className: "className",
                sensitiveSearch: "sensitiveSearch"
            },
            tokens = options[id.tokens],
            allClassName = options[id.all][id.className],
            allSensitiveSearch = options[id.all][id.sensitiveSearch];


            function checkAndReplace(node, tokenArr, classNameAll, sensitiveSearchAll)
            {
                var nodeVal = node.nodeValue, parentNode = node.parentNode,
                    i, j, curToken, myToken, myClassName, mySensitiveSearch,
                    finalClassName, finalSensitiveSearch,
                    foundIndex, begin, matched, end,
                    textNode, span, isFirst;

                for (i = 0, j = tokenArr.length; i < j; i++)
                {
                    curToken = tokenArr[i];
                    myToken = curToken[id.token];
                    myClassName = curToken[id.className];
                    mySensitiveSearch = curToken[id.sensitiveSearch];

                    finalClassName = (classNameAll ? myClassName + " " + classNameAll : myClassName);

                    finalSensitiveSearch = (typeof sensitiveSearchAll !== "undefined" ? sensitiveSearchAll : mySensitiveSearch);

                    isFirst = true;
                    while (true)
                    {
                        if (finalSensitiveSearch)
                            foundIndex = nodeVal.indexOf(myToken);
                        else
                            foundIndex = nodeVal.toLowerCase().indexOf(myToken.toLowerCase());

                        if (foundIndex < 0)
                        {
                            if (isFirst)
                                break;

                            if (nodeVal)
                            {
                                textNode = document.createTextNode(nodeVal);
                                parentNode.insertBefore(textNode, node);
                            } // End if (nodeVal)

                            parentNode.removeChild(node);
                            break;
                        } // End if (foundIndex < 0)

                        isFirst = false;


                        begin = nodeVal.substring(0, foundIndex);
                        matched = nodeVal.substr(foundIndex, myToken.length);

                        if (begin)
                        {
                            textNode = document.createTextNode(begin);
                            parentNode.insertBefore(textNode, node);
                        } // End if (begin)

                        span = document.createElement("span");
                        span.className += finalClassName;
                        span.appendChild(document.createTextNode(matched));
                        parentNode.insertBefore(span, node);

                        nodeVal = nodeVal.substring(foundIndex + myToken.length);
                    } // Whend

                } // Next i 
            }; // End Function checkAndReplace 

            function iterator(p)
            {
                if (p === null) return;

                var children = Array.prototype.slice.call(p.childNodes), i, cur;

                if (children.length)
                {
                    for (i = 0; i < children.length; i++)
                    {
                        cur = children[i];
                        if (cur.nodeType === 3)
                        {
                            checkAndReplace(cur, tokens, allClassName, allSensitiveSearch);
                        }
                        else if (cur.nodeType === 1)
                        {
                            iterator(cur);
                        }
                    }
                }
            }; // End Function iterator

            iterator(options[id.container]);
        } // End Function highlighter
        ;


        internalHighlighter(
            {
                container: container
                , all:
                    {
                        className: "highlighter"
                    }
                , tokens: [
                    {
                        token: highlightText
                        , className: "highlight"
                        , sensitiveSearch: false
                    }
                ]
            }
        ); // End Call internalHighlighter 

    } // End Function highlight

};

我用它就像 -

function TestTextHighlighting(highlightText)
{
    var container = document.getElementById("ID of the element");
    InstantSearch.highlight(container, highlightText);
}

现在，当前当有文本需要在跨度中突出显示时，它就可以正常工作。但是，当存在来自两个跨度或来自任何其他标签的文本时，它不会突出显示该文本。喜欢

For e.g.

<p style="padding:0;color:#000000;font-size:12pt;line-height:1.0;margin-right:0;margin-left:72pt;text-indent:-72pt;font-family:&quot;Times New Roman&quot;;margin-top:0;orphans:2;margin-bottom:0;widows:2;text-align:justify"><span style="vertical-align:baseline;font-size:11pt;font-family:&quot;Calibri&quot;;font-weight:700">Description:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color:#000000;font-weight:400;text-decoration:none;vertical-align:baseline;font-size:11pt;font-family:&quot;Calibri&quot;;font-style:normal">Developed web app for add management.</span></p>
<span style="vertical-align:baseline;font-size:11pt;font-family:&quot;Calibri&quot;;font-weight:700">Contribution:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="vertical-align:baseline;font-size:11pt;font-family:&quot;Calibri&quot;;font-weight:400">It was the internal use web app for the <br>we developed the app for the add management for the.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span>

在此如果我有文字要突出显示Developed web app for add management.然后就可以了。但是如果我想突出显示整个文本，例如 -

描述：开发用于添加管理的网络应用程序。
贡献：这是内部使用的网络应用程序 我们开发了用于添加管理的应用程序

所以，这里就不强调了。有人可以帮我解决这个问题吗？

而不是 $timeout 做其他事情。

<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.4/angular.min.js"></script>
<body>
<style>
.highlight {
    color:white;
    background-color:lightblue;
    padding:20px;
    font-family:"Courier New";
}
</style>
<div ng-app="myApp" ng-controller="myCtrl">

<p> <span ng-class="changeClass?'highlight':''">Some text Developed web app for add management. </span></p>
</div>

<script>
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope,$timeout) {
$scope.changeClass = false;
    // Do some stuff and change veriable
    $timeout(()=>{
    	$scope.changeClass = true;
    },1500)
});
</script>

</body>
</html>