我有一个这样的下拉列表:
<select id="box1">
<option value="98">dog</option>
<option value="7122">cat</option>
<option value="142">bird</option>
</select>
我如何才能获得实际的选项文本，而不是使用JavaScript的值?我可以通过如下方式获取值:
<select id="box1" onChange="myNewFunction(this.selectedIndex);" >
但我想要猫而不是7122。
当前回答
试着选择
myNewFunction(sel) { alert (sel.options [sel.selectedIndex]。text); ｝ <select id="box1" onChange="myNewFunction(this);" > 狗<选项值= " 98 " > < /选项> 猫<选项值= " 7122 " > < /选项> 鸟<选项值= " 142 " > < /选项> < /选择>
其他回答
使用普通JavaScript
onChange = { e => e.currentTarget.options[e.selectedIndex].text }
如果值在循环中，会给你精确的值。
使用jquery。 在你看来
let selText = $("#box1 option:selected").text();
console.log(selText);
纯JavaScript
var sel = document.getElementById("box1");
var text= sel.options[sel.selectedIndex].text;
jQuery:
$("#box1 option:selected").text();
<select class="cS" onChange="fSel2(this.value);">
<option value="0">S?lectionner</option>
<option value="1">Un</option>
<option value="2" selected>Deux</option>
<option value="3">Trois</option>
</select>
<select id="iS1" onChange="fSel(options[this.selectedIndex].value);">
<option value="0">S?lectionner</option>
<option value="1">Un</option>
<option value="2" selected>Deux</option>
<option value="3">Trois</option>
</select><br>
<select id="iS2" onChange="fSel3(options[this.selectedIndex].text);">
<option value="0">S?lectionner</option>
<option value="1">Un</option>
<option value="2" selected>Deux</option>
<option value="3">Trois</option>
</select>
<select id="iS3" onChange="fSel3(options[this.selectedIndex].textContent);">
<option value="0">S?lectionner</option>
<option value="1">Un</option>
<option value="2" selected>Deux</option>
<option value="3">Trois</option>
</select>
<select id="iS4" onChange="fSel3(options[this.selectedIndex].label);">
<option value="0">S?lectionner</option>
<option value="1">Un</option>
<option value="2" selected>Deux</option>
<option value="3">Trois</option>
</select>
<select id="iS4" onChange="fSel3(options[this.selectedIndex].innerHTML);">
<option value="0">S?lectionner</option>
<option value="1">Un</option>
<option value="2" selected>Deux</option>
<option value="3">Trois</option>
</select>
<script type="text/javascript"> "use strict";
const s=document.querySelector(".cS");
// options[this.selectedIndex].value
let fSel = (sIdx) => console.log(sIdx,
s.options[sIdx].text, s.options[sIdx].textContent, s.options[sIdx].label);
let fSel2= (sIdx) => { // this.value
console.log(sIdx, s.options[sIdx].text,
s.options[sIdx].textContent, s.options[sIdx].label);
}
// options[this.selectedIndex].text
// options[this.selectedIndex].textContent
// options[this.selectedIndex].label
// options[this.selectedIndex].innerHTML
let fSel3= (sIdx) => {
console.log(sIdx);
}
</script> // fSel
但是:
<script type="text/javascript"> "use strict";
const x=document.querySelector(".cS"),
o=x.options, i=x.selectedIndex;
console.log(o[i].value,
o[i].text , o[i].textContent , o[i].label , o[i].innerHTML);
</script> // .cS"
还有这个:
<select id="iSel" size="3">
<option value="one">Un</option>
<option value="two">Deux</option>
<option value="three">Trois</option>
</select>
<script type="text/javascript"> "use strict";
const i=document.getElementById("iSel");
for(let k=0;k<i.length;k++) {
if(k == i.selectedIndex) console.log("Selected ".repeat(3));
console.log(`${Object.entries(i.options)[k][1].value}`+
` => ` +
`${Object.entries(i.options)[k][1].innerHTML}`);
console.log(Object.values(i.options)[k].value ,
" => ",
Object.values(i.options)[k].innerHTML);
console.log("=".repeat(25));
}
</script>
据我所知，有两种解决办法。
两者都只需要使用普通的javascript
1 selectedOptions
现场演示
const log = console.log; const areaSelect = document.querySelector(`[id="area"]`); areaSelect.addEventListener(`change`, (e) => { // log(`e.target`, e.target); const select = e.target; const value = select.value; const desc = select.selectedOptions[0].text; log(`option desc`, desc); }); <div class="select-box clearfix"> <label for="area">Area</label> <select id="area"> <option value="101">A1</option> <option value="102">B2</option> <option value="103">C3</option> </select> </div>
两个选择
现场演示
const log = console.log; const areaSelect = document.querySelector(`[id="area"]`); areaSelect.addEventListener(`change`, (e) => { // log(`e.target`, e.target); const select = e.target; const value = select.value; const desc = select.options[select.selectedIndex].text; log(`option desc`, desc); }); <div class="select-box clearfix"> <label for="area">Area</label> <select id="area"> <option value="101">A1</option> <option value="102">B2</option> <option value="103">C3</option> </select> </div>
