使用HTML5(DataList控件)自动完成与'包含'的做法,不只是“开头” [英] Use HTML5 (datalist) autocomplete with 'contains' approach, not just 'starts with'
问题描述
(我无法找到它,但随后再次我真的不知道如何寻找它。)
我想用<输入列表= XXX>
和< DataList控件ID = XXX>
来获得自动完成,但我想在浏览器中通过'包含'的方法匹配所有的选项,而不是'开头',这似乎是标准。有什么办法?
如果不是简单地说,就是有没有办法强制显示,我想说明的建议,而不是那些浏览器是否匹配?比方说,我打字富,我想显示选项栏和巴兹。我可以强制那些在用户?如果我只需填写与那些(与JS)DataList控件,浏览器仍然会尽自己的检查开头,并把它们过滤掉。
我想就如何在DataList选项显示的最终控制权。没过它的用户界面,灵活性,可访问性等,所以我并不想彻底改造它。甚至不建议一个jQuery插件。
如果我能最终控制表单元素验证,为什么不自动完成,对吧?
编辑:我现在看到Firefox没有使用'包含'的方法......这甚至不是一个标准?任何方式强迫呢?我可以改变Firefox的方法是什么?
编辑:我做了这个说明想什么我:的http:/ /jsfiddle.net/rudiedirkx/r3jbfpxw/
'包含'的方法
这也许是你在找什么(你的问题的一部分1)。
它跟的开头的限制和更改时做出选择。
使用严格的;\r
功能updateList(即){\r
VAR lastValue = that.lastValue,\r
值= that.value,\r
数组= [],\r
POS = value.indexOf('|'),\r
开始= that.selectionStart,\r
结束= that.selectionEnd,\r
选择;\r
\r
如果(that.options){\r
选项= that.options;\r
}其他{\r
选项= Object.keys(that.list.options).MAP(功能(选件){\r
返回that.list.options [选项] .value的;\r
});\r
that.options =选择;\r
}\r
\r
如果(lastValue!==值){\r
that.list.innerHTML = options.filter(函数(){\r
返回〜a.toLowerCase()的indexOf(value.toLowerCase())。\r
})。图(函数(){\r
回归'<期权价值=+值+'|' + A +'>' + A +'< /选项>';\r
})。加入();\r
updateInput(即)\r
that.lastValue =价值;\r
}\r
}\r
\r
功能updateInput(即){\r
VAR值= that.value,\r
POS = value.indexOf('|'),\r
开始= that.selectionStart,\r
最终= that.selectionEnd;\r
\r
如果(POS〜){\r
值= value.slice(POS + 1);\r
}\r
that.value =价值;\r
that.setSelectionRange(开始,结束);\r
}\r
\r
document.getElementsByTagName('输入')。browser.addEventListener('KEYUP',函数(E){\r
updateList(本);\r
});\r
document.getElementsByTagName('输入')。browser.addEventListener(输入,功能(E){\r
updateInput(本);\r
});
\r
<输入列表=浏览器NAME =浏览器ID =浏览器的onkeyup =updateDatalist(); oninput =updateInput();>\r
< DataList控件ID =浏览器>\r
<期权价值=Internet Explorer的>\r
<期权价值=火狐>\r
<期权价值=铬>\r
<期权价值=歌剧>\r
<期权价值=野生动物园>\r
< / DataList控件>
\r
修改
显示搜索内容的不同的方法,要明确,会发生什么情况。这在Chrome的为好。由<一个启发href=\"http://stackoverflow.com/questions/29882361/show-datalist-labels-but-submit-the-actual-value\">Show DataList的标签,但提交的实际值
使用严格的;\r
VAR的DataList = {\r
R:['拉尔夫','罗尼','rudie'],\r
る:['rudie','鲁特','rudiedirkx'],\r
RUD:['rudie','rudiedirkx'],\r
鲁迪:['rudie'],\r
鲁多:鲁道夫'],\r
富:\r
{值:42,文本:答案},\r
{值:1337,文本:精英},\r
{值:69,文本:脏},\r
{值:3.14,文本:'皮'}\r
]\r
},\r
分离器='&GT; ';\r
\r
功能updateList(即){\r
VAR lastValue = that.lastValue,\r
值= that.value,\r
阵,\r
键,\r
POS = value.indexOf('|'),\r
开始= that.selectionStart,\r
最终= that.selectionEnd;\r
\r
如果(lastValue!==值){\r
如果(值!==''){\r
如果(在DataList控件的值){\r
键=值;\r
}其他{\r
Object.keys(DataList控件)。有些(函数(){\r
返回〜a.toLowerCase()的indexOf(value.toLowerCase())及。&放大器; (键= A);\r
});\r
}\r
}\r
that.list.innerHTML =钥匙? DataList控件[关键] .MAP(函数(){\r
回归'&LT;选项数据值='+(a.value中|| A)+'&GT;' +价值+(价值===键'?':分隔符+键)+分离器+(a.text || A)+'&LT; /选项&GT;';\r
})join()方法:'';\r
updateInput(即)\r
that.lastValue =价值;\r
}\r
}\r
\r
功能updateInput(即){\r
VAR值= that.value,\r
POS = value.lastIndexOf(分隔符),\r
开始= that.selectionStart,\r
最终= that.selectionEnd;\r
\r
如果(POS〜){\r
值= value.slice(POS + SEPARATOR.length);\r
}\r
Object.keys(that.list.options)。有些(功能(选件){\r
变种O = that.list.options [选项]\r
P = o.text.lastIndexOf(分隔符);\r
如果(o.text.slice(P + SEPARATOR.length)===值){\r
值= o.getAttribute('数据值');\r
返回true;\r
}\r
});\r
that.value =价值;\r
that.setSelectionRange(开始,结束);\r
}\r
\r
document.getElementsByTagName('输入')。xx.addEventListener('KEYUP',函数(E){\r
updateList(本);\r
});\r
document.getElementsByTagName('输入')。xx.addEventListener(输入,功能(E){\r
updateInput(本);\r
});
\r
&LT;输入列表=XXXNAME =XXID =XX &GT;\r
&LT; DataList控件ID =XXX类型=文本&GT;&LT; / DataList控件&GT;
\r
(I can't find it, but then again I don't really know how to search for it.)
I want to use <input list=xxx>
and <datalist id=xxx>
to get autocompletion, BUT I want the browser to match all options by 'contains' approach, instead of 'starts with', which seems to be standard. Is there a way?
If not simply, is there a way to force-show suggestions that I want to show, not those that the browser matched? Let's say I'm typing "foo" and I want to show options "bar" and "baz". Can I force those upon the user? If I just fill the datalist with those (with JS), the browser will still do its 'starts with' check, and filter them out.
I want ultimate control over HOW the datalist options show. NOT over its UI, flexibility, accessibility etc, so I don't want to completely remake it. Don't even suggest a jQuery plugin.
If I can ultimate-control form element validation, why not autocompletion, right?
edit: I see now that Firefox does use the 'contains' approach... That's not even a standard?? Any way to force this? Could I change Firefox's way?
edit: I made this to illustrate what I'd like: http://jsfiddle.net/rudiedirkx/r3jbfpxw/
- HTMLWG's specs on
[list]
- W3's specs on
datalist
- DavidWalsh example
- HONGKIAT's summary on behaviors..?
'contains' approach
Maybe this is what you are looking for (part 1 of your question).
It goes with the limitation of "starts with" and changes when a selection is made.
'use strict';
function updateList(that) {
var lastValue = that.lastValue,
value = that.value,
array = [],
pos = value.indexOf('|'),
start = that.selectionStart,
end = that.selectionEnd,
options;
if (that.options) {
options = that.options;
} else {
options = Object.keys(that.list.options).map(function (option) {
return that.list.options[option].value;
});
that.options = options;
}
if (lastValue !== value) {
that.list.innerHTML = options.filter(function (a) {
return ~a.toLowerCase().indexOf(value.toLowerCase());
}).map(function (a) {
return '<option value="' + value + '|' + a + '">' + a + '</option>';
}).join();
updateInput(that);
that.lastValue = value;
}
}
function updateInput(that) {
var value = that.value,
pos = value.indexOf('|'),
start = that.selectionStart,
end = that.selectionEnd;
if (~pos) {
value = value.slice(pos + 1);
}
that.value = value;
that.setSelectionRange(start, end);
}
document.getElementsByTagName('input').browser.addEventListener('keyup', function (e) {
updateList(this);
});
document.getElementsByTagName('input').browser.addEventListener('input', function (e) {
updateInput(this);
});
<input list="browsers" name="browser" id="browser" onkeyup="updateDatalist();" oninput="updateInput();">
<datalist id="browsers">
<option value="Internet Explorer">
<option value="Firefox">
<option value="Chrome">
<option value="Opera">
<option value="Safari">
</datalist>
Edit
A different approach of displaying the search content, to make clear, what happens. This works in Chrome as well. Inspired by Show datalist labels but submit the actual value
'use strict';
var datalist = {
r: ['ralph', 'ronny', 'rudie'],
ru: ['rudie', 'rutte', 'rudiedirkx'],
rud: ['rudie', 'rudiedirkx'],
rudi: ['rudie'],
rudo: ['rudolf'],
foo: [
{ value: 42, text: 'The answer' },
{ value: 1337, text: 'Elite' },
{ value: 69, text: 'Dirty' },
{ value: 3.14, text: 'Pi' }
]
},
SEPARATOR = ' > ';
function updateList(that) {
var lastValue = that.lastValue,
value = that.value,
array,
key,
pos = value.indexOf('|'),
start = that.selectionStart,
end = that.selectionEnd;
if (lastValue !== value) {
if (value !== '') {
if (value in datalist) {
key = value;
} else {
Object.keys(datalist).some(function (a) {
return ~a.toLowerCase().indexOf(value.toLowerCase()) && (key = a);
});
}
}
that.list.innerHTML = key ? datalist[key].map(function (a) {
return '<option data-value="' + (a.value || a) + '">' + value + (value === key ? '' : SEPARATOR + key) + SEPARATOR + (a.text || a) + '</option>';
}).join() : '';
updateInput(that);
that.lastValue = value;
}
}
function updateInput(that) {
var value = that.value,
pos = value.lastIndexOf(SEPARATOR),
start = that.selectionStart,
end = that.selectionEnd;
if (~pos) {
value = value.slice(pos + SEPARATOR.length);
}
Object.keys(that.list.options).some(function (option) {
var o = that.list.options[option],
p = o.text.lastIndexOf(SEPARATOR);
if (o.text.slice(p + SEPARATOR.length) === value) {
value = o.getAttribute('data-value');
return true;
}
});
that.value = value;
that.setSelectionRange(start, end);
}
document.getElementsByTagName('input').xx.addEventListener('keyup', function (e) {
updateList(this);
});
document.getElementsByTagName('input').xx.addEventListener('input', function (e) {
updateInput(this);
});
<input list="xxx" name="xx" id="xx">
<datalist id="xxx" type="text"></datalist>
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