[英]Implementing a javascript function to search in a div, getting textrange for the search
How do I get the textrange to do a search for a div (or a form)? 如何获取文本范围来搜索div(或表单)? Are there scripts already available, or jquery functions that search the text of a div?
是否有可用的脚本或用于搜索div文本的jquery函数?
I append a form to a div with this code: 我将以下代码附加到div上:
$('#'+card_id).append('<form id="frm_search" name="frm_search" class="editableToolbar frm_search_links"> <input type="text" placeholder="Type a string..." name="linkcard_search_string" class="txt_form"> <a href="#" title="Search" class="ico_search btn_form" onClick="search_links(\''+card_id+'\', this.form); "></a> <a href="#" title="Close" class="ico_delete btn_form" onClick="close_search(\''+card_id+'\', this.form); "></a> </form>');
I'd like to have a search function that will only look for a string in that div. 我想拥有一个仅在该div中查找字符串的搜索功能。 I specify the text range like this.
我指定这样的文本范围。
txt = window.document.body.getelementbyid(card_id).createTextRange();
The search function is one that I found on the net and that I am trying to update to search the div instead of the entire page. 搜索功能是我在网上找到的一种功能,我正在尝试更新该功能以搜索div而不是整个页面。 There will be several divs on the page and I want the search to be specific to each.
页面上将有多个div,我希望搜索特定于每个div。 I call that function from
search_links(card_id);
我从
search_links(card_id);
调用该函数search_links(card_id);
. 。
function search_links (card_id, form) {
var search_str = document.frm_search.linkcard_search_string.value;
/* alert('search_links '+search_str); */
return search_linkcard(search_str, card_id);
}
var IE4 = (document.all);
var n = 0;
function search_linkcard(str, card_id) {
alert (card_id + ' ' + str);
var txt, i, found;
if (str == "")
return false;
// Find next occurance of the given string on the page, wrap around to the
// start of the page if necessary.
if (IE4) {
txt = window.document.body.getelementbyid(card_id).createTextRange();
// Find the nth match from the top of the page.
for (i = 0; i <= n && (found = txt.findText(str)) != false; i++) {
txt.moveStart("character", 1);
txt.moveEnd("textedit");
}
// If found, mark it and scroll it into view.
if (found) {
txt.moveStart("character", -1);
txt.findText(str);
txt.select();
txt.scrollIntoView();
n++;
}
// Otherwise, start over at the top of the page and find first match.
else {
if (n > 0) {
n = 0;
search_linkcard(str, card_id);
}
// Not found anywhere, give message.
else
alert("Not found.");
}
}
return false;
}
My specific questions are those at the beginning of the question: How do I specify a text range for the div? 我的具体问题是问题的开头:我如何为div指定文本范围? Is the syntax I have right?
我的语法正确吗? Are there scripts that already do what I want, ie search the contents of a specific div?
是否有已经执行我想要的脚本,即搜索特定div的内容?
Did the search with :contains. 搜索是否包含:contains。 Did not do one match at a time.
一次没有进行一场比赛。 Highlighted all matches.
突出显示所有比赛。
// Open search
function open_search(card_id) {
$('#'+card_id).append('<form id="frm_search" name="frm_search" class="editableToolbar frm_search_links"> <input type="text" placeholder="Type a string..." name="linkcard_search_string" class="txt_form" onclick="clear_search(\''+card_id+'\', this.form);"> <a href="#" title="Search" class="ico_search btn_form" onClick="search_links(\''+card_id+'\', this.form); "></a> <a href="#" title="Close" class="ico_delete btn_form" onClick="close_search(\''+card_id+'\', this.form); "></a> </form>');
var frm_elements = frm_search_link.elements;
for(i=0; i<frm_elements.length; i++) {
field_type = frm_elements[i].type.toLowerCase();
switch (field_type)
{
case "text":
frm_elements[i].value = "";
break;
default:
break;
}
}
}
// Close search
function close_search(card_id, form) {
$('form.frm_search_links', $('#'+card_id)).remove();
var card_select = '#'+card_id;
$('.link',$(card_select)).removeClass('search_results');
}
// Search links
function search_links (card_id, form) {
var search_str = document.frm_search.linkcard_search_string.value;
var search_select = '.link:contains('+search_str+')';
var card_select = '#'+card_id;
var result = $(search_select,$(card_select)).addClass('search_results');
if (result.length == 0 || result.length == null) document.frm_search.linkcard_search_string.value = 'Not found.';
}
// Clear search
function clear_search (card_id, form) {
document.frm_search.linkcard_search_string.value = '';
var card_select = '#'+card_id;
$('.link',$(card_select)).removeClass('search_results');
}
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