针对selectpicker实现的多级联动

<div style="background-color:#1e1f22;color:#bcbec4"><pre style="font-family:'JetBrains Mono',monospace;font-size:9.8pt;">$(<span style="color:#c77dba;font-style:italic;">document</span>).<span style="color:#56a8f5;">on</span>(<span style="color:#6aab73;">"change"</span>, <span style="color:#6aab73;">"#c-county_id"</span>, <span style="color:#cf8e6d;">function</span>(){<br> <span style="color:#7a7e85;">//</span><span style="color:#7a7e85;font-family:'宋体',monospace;">变更后的回调事件<br></span><span style="color:#7a7e85;font-family:'宋体',monospace;"> </span><span style="color:#cf8e6d;">var </span><span style="color:#a9b7c6;">county_id </span>= $(<span style="color:#cf8e6d;">this</span>).<span style="color:#56a8f5;">val</span>();<br> <span style="color:#c77dba;font-style:italic;">console</span>.<span style="color:#56a8f5;">log</span>(<span style="color:#a9b7c6;">county_id</span>)<br> <span style="color:#7a7e85;">// </span><span style="color:#7a7e85;font-family:'宋体',monospace;">动态修改</span><span style="color:#7a7e85;">selectPage</span><span style="color:#7a7e85;font-family:'宋体',monospace;">请求参数<br></span><span style="color:#7a7e85;font-family:'宋体',monospace;"> </span>$(<span style="color:#6aab73;">'[</span><span style="color:#d5b778;">name</span><span style="color:#6aab73;">="row[street_id]_text"]'</span>).<span style="color:#56a8f5;">data</span>(<span style="color:#6aab73;">'selectPageObject'</span>).<span style="color:#c77dbb;">option</span>.<span style="color:#56a8f5;">params </span>= <span style="color:#cf8e6d;">function </span>() {<br> <span style="color:#cf8e6d;">return </span>{<span style="color:#c77dbb;">custom</span>: {<span style="color:#6aab73;">'county_id'</span>:<span style="color:#a9b7c6;">county_id</span>}};<br> }<br> $(<span style="color:#6aab73;">'#c-street_id'</span>).<span style="color:#56a8f5;">selectPageClear</span>();<br>});</pre></div>