codemirror:搜索并突出显示多词而不显示对话框 [英] codemirror: search and highlight multipule words without dialog
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问题描述
目标:
我正在使用 codemirror 作为编辑。我想
- 搜索并突出显示多个字符串
- 我希望能够迭代每个数字找到匹配项并打印其行号。
- 我想以编程方式进行操作,并且不希望使用示例 https://codemirror.net/demo/search.html
- Search and highlight multiple strings
- I want to be able to iterate each number of matches found and print its line number.
- I want to do it programatically and do no want to use dialog as in example https://codemirror.net/demo/search.html
问题:
- 在while循环中,仅选择了最后一个匹配项,清除了前一个匹配项,但是我也希望它呈黄色突出显示,例如 https://codemirror.net/demo/search.html
- during while loop only last match is selected, previous ones are cleared , but i also want it hightlighted yellow like https://codemirror.net/demo/search.html
JSFIDDLE: https://jsfiddle.net/bababalcksheep/p7xg1utn/30/
代码:
$(document).ready(function() {
//
var editor = CodeMirror.fromTextArea(document.getElementById("code"), {
mode: "text/html",
lineNumbers: true,
});
//
function search(val) {
var cursor = editor.getSearchCursor(val);
while (cursor.findNext()) {
editor.setSelection(cursor.from(), cursor.to());
console.log('found at line ', cursor.pos.from.line + 1);
}
}
//
$('#search').click(function(event) {
event.preventDefault();
search(/^alpha|^beta/);
});
//
});
推荐答案
调用 setSelection
一次只能突出显示一个连续的子字符串。相反,您可以使用 markText 方法,并传入 cursor.from()
和 cursor.to()
获取要突出显示的位置:
Calling setSelection
can only highlight one continuous substring at a time. Instead, you can use the markText method for this, passing in cursor.from()
and cursor.to()
to get the locations you want to highlight:
$(document).ready(function() {
var editor = CodeMirror.fromTextArea(document.getElementById("code"), {
mode: "text/html",
lineNumbers: true,
});
function search(val) {
var cursor = editor.getSearchCursor(val);
while (cursor.findNext()) {
editor.markText(
cursor.from(),
cursor.to(),
{ className: 'highlight' }
);
}
}
//
$('#search').click(function(event) {
event.preventDefault();
search(/^alpha|^beta/);
});
});
.CodeMirror {
border-top: 1px solid black;
border-bottom: 1px solid black;
height: 200px;
}
.highlight {
color: orange;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.44.0/codemirror.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.44.0/addon/search/searchcursor.min.js"></script>
<link rel="stylesheet" type="text/css" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<link rel="stylesheet" type="text/css" href="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.44.0/codemirror.min.css">
<div class="container">
<p><strong>Objective:</strong></p>
<p>Find/search and highlight both words <strong>alpha</strong> and <strong>beta</strong> in codemirror editor</p>
<button id="search" type="button" class="btn btn-primary">Search and highlight</button>
<br><br>
<textarea id="code" name="code" rows="8">Text line
alpha 1
Text line
Text line
alpha 2
Text line
Text line
beta 1
Text line</textarea>
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