我有一本称为“试用版”的嵌套词典。在其中,有一些名为“数据”的键,其中包含svg字符串列表,而有“度量”的键中包含一个整数列表。
当前,如果测量值小于50,则将相应的数据设置为“ NA”。但是,我希望将其从列表中完全删除,而不是将其设置为NA。有人咨询吗?
非常感谢!
// extract trial data
trial.data = _.map(trial.data, 'svg');
// extract trial measurements
trial.measurements = _.map(trial.measures, function(n, i) {
return n['measurements']
});
// if a measurement is less than 50 inches, then set the data to 'NA'
$.each(trial.measurements, function(n,len) {
if (len < 50) {
trial.data[n] = 'NA';
}
});
答案 0 :(得分:0)
您是否考虑过delete?
delete trial.data[n]
;
或者您可以使用filter:
const trial = {
measures: Array.from({ length: 10 }, () => ({ measurement: Math.random() * 100 }))
}
document.getElementById('original').innerHTML = JSON.stringify(trial, null, 2);
const filtered = trial.measures.filter(x => x.measurement >= 50);
document.getElementById('filtered').innerHTML = JSON.stringify(filtered, null, 2);
div {
display: flex
}
div > * {
flex: 0 0 50%;
}
#original::before {
display: block;
margin-bottom: 1em;
font-weight: bold;
content: 'original'
}
#filtered::before {
display: block;
margin-bottom: 1em;
font-weight: bold;
content: 'filtered'
}
<div>
<pre id="original"></pre>
<pre id="filtered"></pre>
</div>