select

问题 I am making an application where I have multi select dropdown.. In which there is a requirement that I need to place the selected items below the select container. Working Snippet: #container { position: relative; text-align: left; width:100%; } #container > div { padding-top: 2em; } ._2iA8p44d0WZ { border: 1px solid #cccccc; border-radius: 4px; padding: 5px; min-height: 22px; position: relative; } ._7ahQImy { padding: 4px 10px; background: #0096fb; margin-right: 5px; margin-bottom: 5px;

问题 I am making an application where I have multi select dropdown.. In which there is a requirement that I need to place the selected items below the select container. Working Snippet: #container { position: relative; text-align: left; width:100%; } #container > div { padding-top: 2em; } ._2iA8p44d0WZ { border: 1px solid #cccccc; border-radius: 4px; padding: 5px; min-height: 22px; position: relative; } ._7ahQImy { padding: 4px 10px; background: #0096fb; margin-right: 5px; margin-bottom: 5px;

问题 I am trying to get the text value from a dropdown select using [useState} in React Hooks. I just get the value (number) rather than the text. Ive copied the bits of code below which control the select dropdown. What am i missing here? Thanks. const [addrtype, setAddrType] = useState('Home') function handleAddrTypeChange(e) { setAddrType(e.target.value); console.log(addrtype) } <select defaultValue={addrtype} onChange={handleAddrTypeChange} className="browser-default custom-select"> <option

问题 I am trying to get the text value from a dropdown select using [useState} in React Hooks. I just get the value (number) rather than the text. Ive copied the bits of code below which control the select dropdown. What am i missing here? Thanks. const [addrtype, setAddrType] = useState('Home') function handleAddrTypeChange(e) { setAddrType(e.target.value); console.log(addrtype) } <select defaultValue={addrtype} onChange={handleAddrTypeChange} className="browser-default custom-select"> <option

问题 I am currently creating an echo server that disconnects clients after a maxWaitTime of being in idle. I was hoping the program would block the socket until the client sent data but when I run the program in gdb it goes through the select and blocks on Readline. I know retval = 0 whenever it goes through the select and that the fd_set sock goes to [256, (31 zeroes)] and after the select, sock goes to [32 zeroes]. The accepting of the connection happens in another function and the connection

问题 I am currently creating an echo server that disconnects clients after a maxWaitTime of being in idle. I was hoping the program would block the socket until the client sent data but when I run the program in gdb it goes through the select and blocks on Readline. I know retval = 0 whenever it goes through the select and that the fd_set sock goes to [256, (31 zeroes)] and after the select, sock goes to [32 zeroes]. The accepting of the connection happens in another function and the connection

问题 I am currently creating an echo server that disconnects clients after a maxWaitTime of being in idle. I was hoping the program would block the socket until the client sent data but when I run the program in gdb it goes through the select and blocks on Readline. I know retval = 0 whenever it goes through the select and that the fd_set sock goes to [256, (31 zeroes)] and after the select, sock goes to [32 zeroes]. The accepting of the connection happens in another function and the connection

问题 I'm trying to filter lists using contains function, provided by jq. My input , [1, 2, 3, 4, 5] And I have a "whitelist" : [3, 4, 7] I need to filter input list through whitelist. Expected output : [3, 4] I'm able to filter comparing a single item: jq --compact-output --null-input '[1,2,3,4,5] | map(select(. | contains(3)))' [3] I tried this: $ jq --compact-output --null-input '[1,2,3,4,5] | map(select([3,4,7] | contains([.])))' [] $ Here [3,4,7] | contains([.]) intents to pose question: is [.

问题 I do with select in two ways: With disabled option. With optgroup tag. <select name="curso1" id="curso1"> <option disabled="" style="font-size:12px; text-align:left; font-family:Arial Black">Group</option> <option value="1">Windows 8</option> <option value="8">lalalala</option> </select> <select> <optgroup label="Swedish Cars"> <option value="volvo">Volvo</option> <option value="saab">Saab</option> </optgroup> <optgroup label="German Cars"> <option value="mercedes">Mercedes</option> <option

问题 I do with select in two ways: With disabled option. With optgroup tag. <select name="curso1" id="curso1"> <option disabled="" style="font-size:12px; text-align:left; font-family:Arial Black">Group</option> <option value="1">Windows 8</option> <option value="8">lalalala</option> </select> <select> <optgroup label="Swedish Cars"> <option value="volvo">Volvo</option> <option value="saab">Saab</option> </optgroup> <optgroup label="German Cars"> <option value="mercedes">Mercedes</option> <option