blocks|key|479751|text|幸运的是，您应该能够使用angular.element，与使用jQuery的方式几乎完全一样。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|479752|angular.element('h1')将找到h1元素。|style|CODE|479753|entityMap|0|LINK|mutability|MUTABLE|url|http://docs.angularjs.org/api/ng/function/angular.element^0|C|F|0|0|0|L|O|2|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@$A|Q|B|R|1|S]]|C|$]]|$1|D|3|E|5|6|7|T|8|@$A|U|B|V|F|G]|$A|W|B|X|F|G]]|9|@]|C|$]]|$1|H|3|-4|5|6|7|Y|8|@]|9|@]|C|$]]]|I|$J|$5|K|L|M|C|$N|O]]]]

<p>You're in luck, and should be able to use <a href="http://docs.angularjs.org/api/ng/function/angular.element" rel="nofollow">angular.element</a> almost exactly the same way as you would use jQuery.</p>

<p><code>angular.element('h1')</code> will find <code>h1</code> elements.</p>


blocks|key|479767|text|在这里，jqLite是您的选择，但是不要忘记，.find()仅限于通过标记名进行查找。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|479768|如果这有帮助，请检查这些所以+所以答案。|offset|length|479769|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/17283697/angularjs-how-to-find-using-jqlite|1|https://stackoverflow.com/questions/14865965/angularjs-directive-element-find^0|0|C|2|0|F|2|1|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Q|8|@]|9|@$D|R|E|S|1|T]|$D|U|E|V|1|W]]|A|$]]|$1|F|3|-4|5|6|7|X|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|M]]|N|$5|I|J|K|A|$L|O]]]]

<p>Angular jqLite is your option here, but don't forget that .find() is limited to lookups by tag name.</p>

<p>Check these <a href="https://stackoverflow.com/questions/17283697/angularjs-how-to-find-using-jqlite">SO</a> <a href="https://stackoverflow.com/questions/14865965/angularjs-directive-element-find">SO</a> answers if that helps.</p>


blocks|key|1203049|text|您可以找到具有类".text“的元素|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1203050|angular.element(document.querySelectorAll(".text"));|code-block|syntax|javascript|1203051|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

<p>You can find the elements having the class ".text" using </p>

<pre><code>angular.element(document.querySelectorAll(".text"));
</code></pre>


blocks|key|479833|text|这是我的最后解决方案。当文本更新时，ng模型部件用于更新标题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|479834|.directive('tableOfContents',+function(){
++++return+{
++++++++restrict:'A',
++++++++require:'?ngModel',
++++++++link+:+function(scope,+elm,+attrs,ngModel)+{
++++++++++++function+updateHeadlines()+{
++++++++++++++++scope.headlines=[];
++++++++++++++++angular.forEach(elm[0].querySelectorAll('h1,h2,h3,h4,h5,h6'),+function(e){
++++++++++++++++++++scope.headlines.push({+
++++++++++++++++++++++++level:+e.tagName[1],+
++++++++++++++++++++++++label:+angular.element(e).text(),
++++++++++++++++++++++++element:+e
++++++++++++++++++++});
++++++++++++++++});
++++++++++++}
++++++++++++//+avoid+memoryleaks+from+dom+references
++++++++++++scope.$on('$destroy',function(){
++++++++++++++++scope.headlines=[];
++++++++++++});
++++++++++++//+scroll+to+one+of+the+headlines
++++++++++++scope.scrollTo=function(headline){
++++++++++++++++headline.element.scrollIntoView();
++++++++++++}
++++++++++++//+when+the+html+updates+whe+update+the+headlines
++++++++++++ngModel.$render+=+updateHeadlines;
++++++++++++updateHeadlines();
++++++++}
++++}
})|code-block|syntax|javascript|479835|用法：|479836|<a+ng-repeat="headline+in+headlines"+ng-click="scrollTo(headline)">{{headline.label}}</a>
<div+table-of-contents+ng-model="html">{{html}}</div>|479837|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

<p>So here is my final solution. The ng-model part is used to update the headlines when the text is updated.</p>

<pre><code>.directive('tableOfContents', function(){
    return {
        restrict:'A',
        require:'?ngModel',
        link : function(scope, elm, attrs,ngModel) {
            function updateHeadlines() {
                scope.headlines=[];
                angular.forEach(elm[0].querySelectorAll('h1,h2,h3,h4,h5,h6'), function(e){
                    scope.headlines.push({ 
                        level: e.tagName[1], 
                        label: angular.element(e).text(),
                        element: e
                    });
                });
            }
            // avoid memoryleaks from dom references
            scope.$on('$destroy',function(){
                scope.headlines=[];
            });
            // scroll to one of the headlines
            scope.scrollTo=function(headline){
                headline.element.scrollIntoView();
            }
            // when the html updates whe update the headlines
            ngModel.$render = updateHeadlines;
            updateHeadlines();
        }
    }
})
</code></pre>

<p>Usage:</p>

<pre><code>&lt;a ng-repeat="headline in headlines" ng-click="scrollTo(headline)"&gt;{{headline.label}}&lt;/a&gt;
&lt;div table-of-contents ng-model="html"&gt;{{html}}&lt;/div&gt;
</code></pre>


blocks|key|1480428|text|看看这个库-+https://www.cssscript.com/generating-a-table-of-contents-with-pure-javascript-toc/|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1480429|您可以简单地将js代码放在控制器中，并将所有头放在一个带有id+#toc的标记下。|1480430|在html文件中创建|1480431|<div+class="col-md-3+col-xs-12">
++++<aside+id="toc"></aside>+
</div>
<div+class="col-md-9+col-xs-12+no-padding">
++++<div+id="doc-content">
++++...+Your+content+is+here+...
</div>|code-block|syntax|javascript|1480432|然后在你的控制器中包含这个函数。例如，您可以从onInit调用它。|1480433|loadTOC(){


++++//+Definitions
++++var+extendObj+=+function+(src,+target)+{
++++++for+(var+prop+in+target)+{
++++++++++if+(target.hasOwnProperty(prop)+&&+target[prop])+{
++++++++++++++src[prop]+=+target[prop];
++++++++++}
++++++}

++++++return+src;
++++};

++++var+getHeaders+=+function+(selector,+scope)+{
++++++++var+ret+=+[];
++++++++var+target+=+document.querySelectorAll(scope);

++++++++Array.prototype.forEach.call(target,+function+(elem)+{
++++++++++++var+elems+=+elem.querySelectorAll(selector);
++++++++++++ret+=+ret.concat(Array.prototype.slice.call(elems));
++++++++});

++++++++return+ret;
++++};

++++var+getLevel+=+function+(header)+{
++++++++if+(typeof+header+!==+'string')+{
++++++++++++return+0;
++++++++}

++++++++var+decs+=+header.match(/\d/g);
++++++++return+decs+?+Math.min.apply(null,+decs)+:+1;
++++};

++++var+createList+=+function+(wrapper,+count)+{
++++++++while+(count--)+{
++++++++++++wrapper+=+wrapper.appendChild(
++++++++++++++++document.createElement('ol')
++++++++++++);

++++++++++++if+(count)+{
++++++++++++++++wrapper+=+wrapper.appendChild(
++++++++++++++++++++document.createElement('li')
++++++++++++++++);
++++++++++++}
++++++++}

++++++++return+wrapper;
++++};

++++var+jumpBack+=+function+(currentWrapper,+offset)+{
++++++++while+(offset--)+{
++++++++++++currentWrapper+=+currentWrapper.parentElement;
++++++++}

++++++++return+currentWrapper;
++++};

++++var+setAttrs+=+function+(overwrite,+prefix)+{
++++++++return+function+(src,+target,+index)+{
++++++++++++var+content+=+src.textContent;
++++++++++++var+pre+=+prefix+%2B+'-'+%2B+index;
++++++++++++target.textContent+=+content;

++++++++++++var+id+=+overwrite+?+pre+:+(src.id+%7C%7C+pre);

++++++++++++id+=+encodeURIComponent(id);

++++++++++++src.id+=+id;
++++++++++++target.href+=+'#'+%2B+id;
++++++++};
++++};

++++var+buildTOC+=+function+(options)+{
++++++++var+selector+=+options.selector;
++++++++var+scope+=+options.scope;

++++++++var+ret+=+document.createElement('ol');
++++++++var+wrapper+=+ret;
++++++++var+lastLi+=+null;

++++++++var+_setAttrs+=+setAttrs(options.overwrite,+options.prefix);

++++++++getHeaders(selector,+scope).reduce(function+(prev,+cur,+index)+{
++++++++++++var+currentLevel+=+getLevel(cur.tagName);
++++++++++++var+offset+=+currentLevel+-+prev;

++++++++++++if+(offset+>+0)+{
++++++++++++++++wrapper+=+createList(lastLi,+offset);
++++++++++++}

++++++++++++if+(offset+<+0)+{
++++++++++++++++wrapper+=+jumpBack(wrapper,+-offset+*+2);
++++++++++++}

++++++++++++wrapper+=+wrapper+%7C%7C+ret;

++++++++++++var+li+=+document.createElement('li');
++++++++++++var+a+=+document.createElement('a');

++++++++++++_setAttrs(cur,+a,+index);

++++++++++++wrapper.appendChild(li).appendChild(a);

++++++++++++lastLi+=+li;

++++++++++++return+currentLevel;
++++++++},+getLevel(selector));

++++++++return+ret;
++++};

++++var+initTOC+=+function+(options)+{
++++++++var+defaultOpts+=+{
++++++++++++selector:+'h1,+h2,+h3,+h4,+h5,+h6',
++++++++++++scope:+'body',
++++++++++++overwrite:+false,
++++++++++++prefix:+'toc'
++++++++};

++++++++options+=+extendObj(defaultOpts,+options);

++++++++var+selector+=+options.selector;

++++++++if+(typeof+selector+!==+'string')+{
++++++++++++throw+new+TypeError('selector+must+be+a+string');
++++++++}

++++++++if+(!selector.match(/%5E(?:h[1-6],?\s*)%2B$/g))+{
++++++++++++throw+new+TypeError('selector+must+contains+only+h1-6');
++++++++}

++++++++return+buildTOC(options);
++++++};

++++//+Generating+the+TOC+
++++var+container+=+document.querySelector('#toc');

++++var+toc+=+initTOC({
++++++++selector:+'h1,+h2',
++++++++scope:+'#doc-content',+//+you+can+specify+here+a+tag+where+to+look+at+
++++++++overwrite:+false,
++++++++prefix:+'toc'
++++});

++++container.appendChild(toc);
++}|1480434|entityMap|0|LINK|mutability|MUTABLE|url|https://www.cssscript.com/generating-a-table-of-contents-with-pure-javascript-toc/^0|7|2A|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@$A|Z|B|10|1|11]]|C|$]]|$1|D|3|E|5|6|7|12|8|@]|9|@]|C|$]]|$1|F|3|G|5|6|7|13|8|@]|9|@]|C|$]]|$1|H|3|I|5|J|7|14|8|@]|9|@]|C|$K|L]]|$1|M|3|N|5|6|7|15|8|@]|9|@]|C|$]]|$1|O|3|P|5|J|7|16|8|@]|9|@]|C|$K|L]]|$1|Q|3|-4|5|6|7|17|8|@]|9|@]|C|$]]]|R|$S|$5|T|U|V|C|$W|X]]]]

<p>Take a look at this library - <a href="https://www.cssscript.com/generating-a-table-of-contents-with-pure-javascript-toc/" rel="nofollow noreferrer">https://www.cssscript.com/generating-a-table-of-contents-with-pure-javascript-toc/</a></p>

<p>You can simply place the js code in your controller and it will place all the headers under a tag with id #toc</p>

<p>in your html file create</p>

<pre><code>&lt;div class="col-md-3 col-xs-12"&gt;
    &lt;aside id="toc"&gt;&lt;/aside&gt; &lt;!-- Content will appear here --&gt;
&lt;/div&gt;
&lt;div class="col-md-9 col-xs-12 no-padding"&gt;
    &lt;div id="doc-content"&gt;
    ... Your content is here ...
&lt;/div&gt;

</code></pre>

<p>And then in your controller include this function. You can call it from onInit for example.</p>

<pre><code>loadTOC(){


    // Definitions
    var extendObj = function (src, target) {
      for (var prop in target) {
          if (target.hasOwnProperty(prop) &amp;&amp; target[prop]) {
              src[prop] = target[prop];
          }
      }

      return src;
    };

    var getHeaders = function (selector, scope) {
        var ret = [];
        var target = document.querySelectorAll(scope);

        Array.prototype.forEach.call(target, function (elem) {
            var elems = elem.querySelectorAll(selector);
            ret = ret.concat(Array.prototype.slice.call(elems));
        });

        return ret;
    };

    var getLevel = function (header) {
        if (typeof header !== 'string') {
            return 0;
        }

        var decs = header.match(/\d/g);
        return decs ? Math.min.apply(null, decs) : 1;
    };

    var createList = function (wrapper, count) {
        while (count--) {
            wrapper = wrapper.appendChild(
                document.createElement('ol')
            );

            if (count) {
                wrapper = wrapper.appendChild(
                    document.createElement('li')
                );
            }
        }

        return wrapper;
    };

    var jumpBack = function (currentWrapper, offset) {
        while (offset--) {
            currentWrapper = currentWrapper.parentElement;
        }

        return currentWrapper;
    };

    var setAttrs = function (overwrite, prefix) {
        return function (src, target, index) {
            var content = src.textContent;
            var pre = prefix + '-' + index;
            target.textContent = content;

            var id = overwrite ? pre : (src.id || pre);

            id = encodeURIComponent(id);

            src.id = id;
            target.href = '#' + id;
        };
    };

    var buildTOC = function (options) {
        var selector = options.selector;
        var scope = options.scope;

        var ret = document.createElement('ol');
        var wrapper = ret;
        var lastLi = null;

        var _setAttrs = setAttrs(options.overwrite, options.prefix);

        getHeaders(selector, scope).reduce(function (prev, cur, index) {
            var currentLevel = getLevel(cur.tagName);
            var offset = currentLevel - prev;

            if (offset &gt; 0) {
                wrapper = createList(lastLi, offset);
            }

            if (offset &lt; 0) {
                wrapper = jumpBack(wrapper, -offset * 2);
            }

            wrapper = wrapper || ret;

            var li = document.createElement('li');
            var a = document.createElement('a');

            _setAttrs(cur, a, index);

            wrapper.appendChild(li).appendChild(a);

            lastLi = li;

            return currentLevel;
        }, getLevel(selector));

        return ret;
    };

    var initTOC = function (options) {
        var defaultOpts = {
            selector: 'h1, h2, h3, h4, h5, h6',
            scope: 'body',
            overwrite: false,
            prefix: 'toc'
        };

        options = extendObj(defaultOpts, options);

        var selector = options.selector;

        if (typeof selector !== 'string') {
            throw new TypeError('selector must be a string');
        }

        if (!selector.match(/^(?:h[1-6],?\s*)+$/g)) {
            throw new TypeError('selector must contains only h1-6');
        }

        return buildTOC(options);
      };

    // Generating the TOC 
    var container = document.querySelector('#toc');

    var toc = initTOC({
        selector: 'h1, h2',
        scope: '#doc-content', // you can specify here a tag where to look at 
        overwrite: false,
        prefix: 'toc'
    });

    container.appendChild(toc);
  }
</code></pre>


<p>Imagine a html text that contains headlines (h1-h6). In my situtation it is also present as DOM in a html page. So using jQuery I would do something like <code>$('.text').find('h1,h2,h3,h4,h5,h6')</code> to extract all the headlines.</p>

<p>But I don't want to use jQuery or any other heavy framework. How can I do this with angularJS?
Please remember that I need the headlines in the correct order to display it as a table of contents.</p>


AngularJS Directive to generate a table of contents

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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想象一下包含标题(h1-h6)的html文本。在我的情况下，它也以DOM的形式出现在html页面中。所以使用jQuery，我会做一些像$('.text').find('h1,h2,h3,h4,h5,h6')这样的事情来提取所有的标题。但我不想使用jQuery或任何其他重框架。我怎样才能用angularJS做到这一点呢？...

问生成目录的AngularJS指令
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