当单击“扩展”时,我需要获取复选框的值,我尝试了以下操作,这看起来很笨拙,并且在修改DOM时,它可能会呈现未定义状态,而不是期望值CBVALUE
<tr>
<td class="first"><input class="selects" type="checkbox" value="CBVALUE" id="r0"></td>
<td class="second"><a target="_blank" href="rGjgODop0">Somevalue</a></td>
<td class="third"><a class="option s" id="option_0">Expand</a> <a href=""></a></td>
<td class="fourth">2018-08-31T08:25:09.617Z</td>
</tr>
$('.option').click(function(e) {
e.preventDefault();
alert($(this).parent().prev().prev().children().first().val()); //should alert as CBVALUE
});
有比遍历相关元素更简单的解决方案吗?
答案 0 :(得分:2)
您可以尝试以下逻辑,在其中找到父tr
,然后找到checkbox
读取值
$(function(){
$('.option').on('click', function(e) {
e.preventDefault();
var value = $(this).closest('tr').find('input:checkbox').val();
alert(value);
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table>
<tr>
<td class="first"><input class="selects" type="checkbox" value="CBVALUE" id="r0"></td>
<td class="second"><a target="_blank" href="rGjgODop0">Somevalue</a></td>
<td class="third"><a class="option s" id="option_0">Expand</a> <a href=""></a></td>
<td class="fourth">2018-08-31T08:25:09.617Z</td>
</tr>
</table>
答案 1 :(得分:1)
您可以使用jQuery的$(...).siblings()
方法并将其传递给选择器:
$('.option').click(function(e) {
e.preventDefault();
alert($(this).siblings("#r0[type='checkbox']").val());
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<tr>
<td class="first"><input class="selects" type="checkbox" value="CBVALUE" id="r0"></td>
<td class="second"><a target="_blank" href="rGjgODop0">Somevalue</a></td>
<td class="third"><a class="option s" id="option_0">Expand</a> <a href=""></a></td>
<td class="fourth">2018-08-31T08:25:09.617Z</td>
</tr>
答案 2 :(得分:1)
改为尝试$.parents()
:
$(this).parents('tr').find('input[type=checkbox]').val()
答案 3 :(得分:1)
对我来说,.find() 方法似乎返回一个复选框对象数组,我需要在末尾添加 [0] 才能应用 .val() 方法,否则我总是“打开”。示例:
<template>
<div>
<!-- <style>
:root {
--info-msg: {{tooltipContent}};
}
</style> -->
<div class="infoBar">
<svg-icon
fill="#d5d5dc"
:width="16"
:height="16"
name="common/c-info"
class="infoBar__icon"
/>
</div>
</div>
</template>
<script>
export default {
name: 'ContentInfo',
props: {
tooltipContent: {
type: String,
default: 'hint text goes here'
}
},
mounted () {
console.log(this.tooltipContent)
this.applyCSS()
},
beforeUpdate () {
this.applyCSS()
},
methods: {
applyCSS () {
const cssRule = `
.infoBar:after{
content: ${this.tooltipContent};
}`
const style = document.createElement('style')
style.type = 'text/css'
this.$el.appendChild(style)
style.innerHTML = cssRule
}
}
}
</script>
<style lang="postcss" >
.infoBar{
position: relative;
margin-left: 24px;
&::after {
background-color: #000;
font-size: 12px;
color: #fff;
border-radius: 2px;
width: 198px;
height: 40px;
/*content: var(--info-msg)*/
display: none;
padding: 11px 26px 10px 27px;
position: absolute;
top: 0;
left: 80%;
transform: translate(-50%, calc(-100% - 10px));
z-index: 999;
}
&::before {
background-color: #000;
content: '';
display: none;
position: absolute;
width: 10px;
height: 6px;
z-index: 999;
top: 0;
left: 80%;
transform: translate(-50%, calc(-100% - 10px)) rotate(45deg);
}
&:hover::after {
display: block;
}
&:hover::before {
display: block;
}
&__icon:hover{
fill: #e4002b;
}
}
</style>
答案 4 :(得分:0)
可以通过使用过滤来完成。观看此演示link
$(this).closest('td').parent().find('input[type=checkbox]').val()