Community Learn Tools Library Leisure
search
English
Home > Web Front-end > HTML Tutorial > body text

JavaScript basics 2 drop-down list left and right selection

WBOY
Release： 2016-09-12 17:27:13
Original
1832 people have browsed it
<span style="color: #008080;"> 1</span> <span style="color: #0000ff;"><!</span><span style="color: #ff00ff;">DOCTYPE html</span><span style="color: #0000ff;">></span>
<span style="color: #008080;"> 2</span> <span style="color: #0000ff;"><</span><span style="color: #800000;">html</span><span style="color: #0000ff;">></span>
<span style="color: #008080;"> 3</span>     <span style="color: #0000ff;"><</span><span style="color: #800000;">head</span><span style="color: #0000ff;">></span>
<span style="color: #008080;"> 4</span>         <span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">charset</span><span style="color: #0000ff;">="UTF-8"</span><span style="color: #0000ff;">></span>
<span style="color: #008080;"> 5</span>         <span style="color: #0000ff;"><</span><span style="color: #800000;">title</span><span style="color: #0000ff;">></span>下拉列表左右选择<span style="color: #0000ff;"></</span><span style="color: #800000;">title</span><span style="color: #0000ff;">></span>
<span style="color: #008080;"> 6</span>         <span style="color: #0000ff;"><</span><span style="color: #800000;">style </span><span style="color: #ff0000;">type</span><span style="color: #0000ff;">="text/css"</span><span style="color: #0000ff;">></span>
<span style="color: #008080;"> 7</span> <span style="background-color: #f5f5f5; color: #800000;">            div </span><span style="background-color: #f5f5f5; color: #000000;">{</span>
<span style="color: #008080;"> 8</span> <span style="background-color: #f5f5f5; color: #ff0000;">                width</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;"> 200px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;"> 9</span> <span style="background-color: #f5f5f5; color: #ff0000;">                float</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;"> left</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">10</span>             <span style="background-color: #f5f5f5; color: #000000;">}</span>
<span style="color: #008080;">11</span> <span style="background-color: #f5f5f5; color: #800000;">            select </span><span style="background-color: #f5f5f5; color: #000000;">{</span>
<span style="color: #008080;">12</span> <span style="background-color: #f5f5f5; color: #ff0000;">                width</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;"> 100px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">13</span> <span style="background-color: #f5f5f5; color: #ff0000;">                height</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;"> 180px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">14</span> <span style="background-color: #f5f5f5; color: #ff0000;">                padding</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;"> 10px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
<span style="color: #008080;">15</span>             <span style="background-color: #f5f5f5; color: #000000;">}</span>
<span style="color: #008080;">16</span>         <span style="color: #0000ff;"></</span><span style="color: #800000;">style</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">17</span>     <span style="color: #0000ff;"></</span><span style="color: #800000;">head</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">18</span>     <span style="color: #0000ff;"><</span><span style="color: #800000;">body</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">19</span>         <span style="color: #0000ff;"><</span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">20</span>             <span style="color: #0000ff;"><</span><span style="color: #800000;">select </span><span style="color: #ff0000;">multiple</span><span style="color: #0000ff;">="multiple"</span><span style="color: #ff0000;"> id</span><span style="color: #0000ff;">="leftSel"</span><span style="color: #ff0000;"> style</span><span style="color: #0000ff;">="margin-left: 17px;"</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">21</span>                 <span style="color: #0000ff;"><</span><span style="color: #800000;">option</span><span style="color: #0000ff;">></span>选项1<span style="color: #0000ff;"></</span><span style="color: #800000;">option</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">22</span>                 <span style="color: #0000ff;"><</span><span style="color: #800000;">option</span><span style="color: #0000ff;">></span>选项2<span style="color: #0000ff;"></</span><span style="color: #800000;">option</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">23</span>                 <span style="color: #0000ff;"><</span><span style="color: #800000;">option</span><span style="color: #0000ff;">></span>选项3<span style="color: #0000ff;"></</span><span style="color: #800000;">option</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">24</span>                 <span style="color: #0000ff;"><</span><span style="color: #800000;">option</span><span style="color: #0000ff;">></span>选项4<span style="color: #0000ff;"></</span><span style="color: #800000;">option</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">25</span>                 <span style="color: #0000ff;"><</span><span style="color: #800000;">option</span><span style="color: #0000ff;">></span>选项5<span style="color: #0000ff;"></</span><span style="color: #800000;">option</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">26</span>                 <span style="color: #0000ff;"><</span><span style="color: #800000;">option</span><span style="color: #0000ff;">></span>选项6<span style="color: #0000ff;"></</span><span style="color: #800000;">option</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">27</span>                 <span style="color: #0000ff;"><</span><span style="color: #800000;">option</span><span style="color: #0000ff;">></span>选项7<span style="color: #0000ff;"></</span><span style="color: #800000;">option</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">28</span>                 <span style="color: #0000ff;"><</span><span style="color: #800000;">option</span><span style="color: #0000ff;">></span>选项8<span style="color: #0000ff;"></</span><span style="color: #800000;">option</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">29</span>                 <span style="color: #0000ff;"><</span><span style="color: #800000;">option</span><span style="color: #0000ff;">></span>选项9<span style="color: #0000ff;"></</span><span style="color: #800000;">option</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">30</span>                 <span style="color: #0000ff;"><</span><span style="color: #800000;">option</span><span style="color: #0000ff;">></span>选项10<span style="color: #0000ff;"></</span><span style="color: #800000;">option</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">31</span>             <span style="color: #0000ff;"></</span><span style="color: #800000;">select</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">32</span>             <span style="color: #0000ff;"><</span><span style="color: #800000;">br </span><span style="color: #0000ff;">/></span>
<span style="color: #008080;">33</span>             <span style="color: #0000ff;"><</span><span style="color: #800000;">input </span><span style="color: #ff0000;">type</span><span style="color: #0000ff;">="button"</span><span style="color: #ff0000;"> value</span><span style="color: #0000ff;">="选中添加到右边 ->"</span><span style="color: #ff0000;"> onclick</span><span style="color: #0000ff;">="choiceToRight()"</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">34</span>             <span style="color: #0000ff;"><</span><span style="color: #800000;">br </span><span style="color: #0000ff;">/></span>
<span style="color: #008080;">35</span>             <span style="color: #0000ff;"><</span><span style="color: #800000;">input </span><span style="color: #ff0000;">type</span><span style="color: #0000ff;">="button"</span><span style="color: #ff0000;"> value</span><span style="color: #0000ff;">="全部添加到右边 -->"</span><span style="color: #ff0000;"> onclick</span><span style="color: #0000ff;">="allToRight()"</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">36</span>         <span style="color: #0000ff;"></</span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">37</span>         
<span style="color: #008080;">38</span>         <span style="color: #0000ff;"><</span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">39</span>             <span style="color: #0000ff;"><</span><span style="color: #800000;">select </span><span style="color: #ff0000;">multiple</span><span style="color: #0000ff;">="multiple"</span><span style="color: #ff0000;"> id</span><span style="color: #0000ff;">="rightSel"</span><span style="color: #ff0000;"> style</span><span style="color: #0000ff;">="margin-left: 17px;"</span><span style="color: #0000ff;">></</span><span style="color: #800000;">select</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">40</span>             <span style="color: #0000ff;"><</span><span style="color: #800000;">br </span><span style="color: #0000ff;">/></span>
<span style="color: #008080;">41</span>             <span style="color: #0000ff;"><</span><span style="color: #800000;">input </span><span style="color: #ff0000;">type</span><span style="color: #0000ff;">="button"</span><span style="color: #ff0000;"> value</span><span style="color: #0000ff;">="<- 选中添加到左边"</span><span style="color: #ff0000;"> onclick</span><span style="color: #0000ff;">="choiceToLeft()"</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">42</span>             <span style="color: #0000ff;"><</span><span style="color: #800000;">br </span><span style="color: #0000ff;">/></span>
<span style="color: #008080;">43</span>             <span style="color: #0000ff;"><</span><span style="color: #800000;">input </span><span style="color: #ff0000;">type</span><span style="color: #0000ff;">="button"</span><span style="color: #ff0000;"> value</span><span style="color: #0000ff;">="<-- 全部添加到左边"</span><span style="color: #ff0000;"> onclick</span><span style="color: #0000ff;">="allToLeft()"</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">44</span>         <span style="color: #0000ff;"></</span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">45</span>     
<span style="color: #008080;">46</span>         <span style="color: #0000ff;"><</span><span style="color: #800000;">script </span><span style="color: #ff0000;">type</span><span style="color: #0000ff;">="text/javascript"</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">47</span>             <span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;"> 获取select</span>
<span style="color: #008080;">48</span>             <span style="background-color: #f5f5f5; color: #0000ff;">var</span><span style="background-color: #f5f5f5; color: #000000;"> leftSel </span><span style="background-color: #f5f5f5; color: #000000;">=</span><span style="background-color: #f5f5f5; color: #000000;"> document.getElementById(</span><span style="background-color: #f5f5f5; color: #000000;">"</span><span style="background-color: #f5f5f5; color: #000000;">leftSel</span><span style="background-color: #f5f5f5; color: #000000;">"</span><span style="background-color: #f5f5f5; color: #000000;">);
</span><span style="color: #008080;">49</span>             <span style="background-color: #f5f5f5; color: #0000ff;">var</span><span style="background-color: #f5f5f5; color: #000000;"> rightSel </span><span style="background-color: #f5f5f5; color: #000000;">=</span><span style="background-color: #f5f5f5; color: #000000;"> document.getElementById(</span><span style="background-color: #f5f5f5; color: #000000;">"</span><span style="background-color: #f5f5f5; color: #000000;">rightSel</span><span style="background-color: #f5f5f5; color: #000000;">"</span><span style="background-color: #f5f5f5; color: #000000;">);
</span><span style="color: #008080;">50</span>             <span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;"> 选中添加到右边</span>
<span style="color: #008080;">51</span>             <span style="background-color: #f5f5f5; color: #0000ff;">function</span><span style="background-color: #f5f5f5; color: #000000;"> choiceToRight() {
</span><span style="color: #008080;">52</span> <span style="background-color: #f5f5f5; color: #000000;">                toSel(leftSel, rightSel, </span><span style="background-color: #f5f5f5; color: #0000ff;">true</span><span style="background-color: #f5f5f5; color: #000000;">);
</span><span style="color: #008080;">53</span> <span style="background-color: #f5f5f5; color: #000000;">            }
</span><span style="color: #008080;">54</span>             <span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;"> 全部添加到右边</span>
<span style="color: #008080;">55</span>             <span style="background-color: #f5f5f5; color: #0000ff;">function</span><span style="background-color: #f5f5f5; color: #000000;"> allToRight() {
</span><span style="color: #008080;">56</span> <span style="background-color: #f5f5f5; color: #000000;">                toSel(leftSel, rightSel, </span><span style="background-color: #f5f5f5; color: #0000ff;">false</span><span style="background-color: #f5f5f5; color: #000000;">);
</span><span style="color: #008080;">57</span> <span style="background-color: #f5f5f5; color: #000000;">            }
</span><span style="color: #008080;">58</span>             <span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;"> 选中添加到左边</span>
<span style="color: #008080;">59</span>             <span style="background-color: #f5f5f5; color: #0000ff;">function</span><span style="background-color: #f5f5f5; color: #000000;"> choiceToLeft() {
</span><span style="color: #008080;">60</span> <span style="background-color: #f5f5f5; color: #000000;">                toSel(rightSel, leftSel, </span><span style="background-color: #f5f5f5; color: #0000ff;">true</span><span style="background-color: #f5f5f5; color: #000000;">);
</span><span style="color: #008080;">61</span> <span style="background-color: #f5f5f5; color: #000000;">            }
</span><span style="color: #008080;">62</span>             <span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;"> 全部添加到左边</span>
<span style="color: #008080;">63</span>             <span style="background-color: #f5f5f5; color: #0000ff;">function</span><span style="background-color: #f5f5f5; color: #000000;"> allToLeft() {
</span><span style="color: #008080;">64</span> <span style="background-color: #f5f5f5; color: #000000;">                toSel(rightSel, leftSel, </span><span style="background-color: #f5f5f5; color: #0000ff;">false</span><span style="background-color: #f5f5f5; color: #000000;">);
</span><span style="color: #008080;">65</span> <span style="background-color: #f5f5f5; color: #000000;">            }
</span><span style="color: #008080;">66</span>             <span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;"> 如果flag为true，就是选中添加，如果为false，就是全部添加</span>
<span style="color: #008080;">67</span>             <span style="background-color: #f5f5f5; color: #0000ff;">function</span><span style="background-color: #f5f5f5; color: #000000;"> toSel(fromSel, toSel, flag) {
</span><span style="color: #008080;">68</span>                 <span style="background-color: #f5f5f5; color: #0000ff;">var</span><span style="background-color: #f5f5f5; color: #000000;"> subSel </span><span style="background-color: #f5f5f5; color: #000000;">=</span><span style="background-color: #f5f5f5; color: #000000;"> fromSel.getElementsByTagName(</span><span style="background-color: #f5f5f5; color: #000000;">"</span><span style="background-color: #f5f5f5; color: #000000;">option</span><span style="background-color: #f5f5f5; color: #000000;">"</span><span style="background-color: #f5f5f5; color: #000000;">);
</span><span style="color: #008080;">69</span>                 <span style="background-color: #f5f5f5; color: #0000ff;">if</span><span style="background-color: #f5f5f5; color: #000000;"> (flag) {
</span><span style="color: #008080;">70</span>                     <span style="background-color: #f5f5f5; color: #0000ff;">for</span><span style="background-color: #f5f5f5; color: #000000;"> (</span><span style="background-color: #f5f5f5; color: #0000ff;">var</span><span style="background-color: #f5f5f5; color: #000000;"> i </span><span style="background-color: #f5f5f5; color: #000000;">=</span> <span style="background-color: #f5f5f5; color: #000000;">0</span><span style="background-color: #f5f5f5; color: #000000;">; i </span><span style="background-color: #f5f5f5; color: #000000;"><</span><span style="background-color: #f5f5f5; color: #000000;"> subSel.length; i</span><span style="background-color: #f5f5f5; color: #000000;">++</span><span style="background-color: #f5f5f5; color: #000000;">) {
</span><span style="color: #008080;">71</span>                         <span style="background-color: #f5f5f5; color: #0000ff;">if</span><span style="background-color: #f5f5f5; color: #000000;"> (subSel[i].selected) {
</span><span style="color: #008080;">72</span> <span style="background-color: #f5f5f5; color: #000000;">                            toSel.appendChild(subSel[i]);
</span><span style="color: #008080;">73</span>                             <span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;"> 因为subSel的length每次会-1，所以让i归零，保证每次for循环都能被执行到</span>
<span style="color: #008080;">74</span> <span style="background-color: #f5f5f5; color: #000000;">                            i</span><span style="background-color: #f5f5f5; color: #000000;">--</span><span style="background-color: #f5f5f5; color: #000000;">;
</span><span style="color: #008080;">75</span> <span style="background-color: #f5f5f5; color: #000000;">                        }
</span><span style="color: #008080;">76</span> <span style="background-color: #f5f5f5; color: #000000;">                    }
</span><span style="color: #008080;">77</span> <span style="background-color: #f5f5f5; color: #000000;">                } </span><span style="background-color: #f5f5f5; color: #0000ff;">else</span><span style="background-color: #f5f5f5; color: #000000;"> {
</span><span style="color: #008080;">78</span>                     <span style="background-color: #f5f5f5; color: #0000ff;">for</span><span style="background-color: #f5f5f5; color: #000000;"> (</span><span style="background-color: #f5f5f5; color: #0000ff;">var</span><span style="background-color: #f5f5f5; color: #000000;"> i </span><span style="background-color: #f5f5f5; color: #000000;">=</span> <span style="background-color: #f5f5f5; color: #000000;">0</span><span style="background-color: #f5f5f5; color: #000000;">; i </span><span style="background-color: #f5f5f5; color: #000000;"><</span><span style="background-color: #f5f5f5; color: #000000;"> subSel.length; i</span><span style="background-color: #f5f5f5; color: #000000;">++</span><span style="background-color: #f5f5f5; color: #000000;">) {
</span><span style="color: #008080;">79</span> <span style="background-color: #f5f5f5; color: #000000;">                        toSel.appendChild(subSel[i]);
</span><span style="color: #008080;">80</span> <span style="background-color: #f5f5f5; color: #000000;">                        i</span><span style="background-color: #f5f5f5; color: #000000;">--</span><span style="background-color: #f5f5f5; color: #000000;">;
</span><span style="color: #008080;">81</span> <span style="background-color: #f5f5f5; color: #000000;">                    }
</span><span style="color: #008080;">82</span> <span style="background-color: #f5f5f5; color: #000000;">                }
</span><span style="color: #008080;">83</span> <span style="background-color: #f5f5f5; color: #000000;">            }
</span><span style="color: #008080;">84</span>         <span style="color: #0000ff;"></</span><span style="color: #800000;">script</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">85</span>     <span style="color: #0000ff;"></</span><span style="color: #800000;">body</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">86</span> <span style="color: #0000ff;"></</span><span style="color: #800000;">html</span><span style="color: #0000ff;">></span>
Copy after login

 

Related labels：
JavaScript基础2——下拉列表左右选择
source：php.cn
Previous article：The box-sizing style of Bootstrap 3 causes the picture of the UEditor control to not scale normally Next article：HTML forms and validation events
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Latest Articles by Author
Latest Issues
function_exists() cannot determine the custom function Function test () {return true;} if (function_exists ('test')) {echo "test is function...
From 2024-04-29 11:01:01
0
2
1862
How to display the mobile version of Google Chrome Hello teacher, how can I change Google Chrome into a mobile version?
From 2024-04-23 00:22:19
0
10
2030
The child window operates the parent window, but the output does not respond. The first two sentences are executable, but the last sentence cannot be implemented.
From 2024-04-19 15:37:47
0
1
1707
There is no output in the parent window document.onclick = function(){ window.opener.document.write('I am the output of the child ...
From 2024-04-18 23:52:34
0
1
1609
Where is the courseware about CSS mind mapping? Courseware
From 2024-04-16 10:10:18
0
0
1622
Related Topics
More>
Popular Recommendations
Popular Tutorials
More>
Related Tutorials
Popular Recommendations
Latest courses
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template