我遇到的问题是该组件没有在按钮 点击 上触发点击事件。
render() {
return (
<div className="TickerPage">
<div className="TickerPage-container">
<br />
<div className='leftContainer'>
<PlayersTable players={this.state.players} />
</div>
<div className='rightContainer'>
<PlayerDetail playerid={this.state.playerid} />
</div>
<div className='bottomTicker'>
<Ticker />
</div>
</div>
</div>
);
render() {
let tbl = this.buildTable();
return (
<div className="PlayersTable">
<div className="PlayersTable-container">
<button onclick='alert("test")'>test</button>
<h1 className='heading'>Players</h1>
{tbl}
<br />
</div>
</div>
);
}
当我点击PlayersTable上的按钮时，没有任何反应。它应该有一个警告框。
谢谢！
答案 0 :(得分：1)
它在你的情况下不起作用的原因应该是一个函数参考。
分配点击事件的最佳方法是在#define TRANSFER_LENGTH_FROM_HOST (128) //Burst input
#define TRANSFER_LENGTH_FROM_FPGA (128) // Burst output
#define NUM_TRANSFERS (50)
#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "ZestSC2.h"
void ErrorHandler(const char *Function, ZESTSC2_HANDLE Handle, ZESTSC2_STATUS Status, const char *Msg)
{
printf("**** Example2 - Function %s returned an error\n \"%s\"\n\n", Function, Msg);
exit(1);
}
int main(int argc, char **argv)
{
unsigned long Count;
unsigned long NumCards;
unsigned long CardIDs[256];
unsigned long SerialNumbers[256];
ZESTSC2_FPGA_TYPE FPGATypes[256];
ZESTSC2_HANDLE Handle;
unsigned __int64 Freq;
unsigned __int64 Start;
unsigned __int64 End;
unsigned long *Buffer_tx;
unsigned long *Buffer_rx;
FILE *fp;
errno_t err = fopen_s(&fp, "C:/Users/Shankhadeep/Documents/results.csv", "w+");
// Install an error handler
ZestSC2RegisterErrorHandler(ErrorHandler);
// Request information about the system
ZestSC2CountCards(&NumCards, CardIDs, SerialNumbers, FPGATypes);
printf("%d available cards in the system\n\n\n", NumCards);
if (NumCards==0)
{
printf("No cards in the system\n");
exit(1);
}
for (Count=0; Count<NumCards; Count++)
printf("%d : CardID = 0x%08lx, SerialNum = 0x%08lx, FPGAType = %d \n \n", Count, CardIDs[Count], SerialNumbers[Count], FPGATypes[Count]);
// Open the first card
ZestSC2OpenCard(CardIDs[0], &Handle);
printf("Reading the bit file .. \n");
if (FPGATypes[0] == ZESTSC2_XC3S2000)
ZestSC2ConfigureFromFile(Handle, "C:/Users/Shankhadeep/Documents/Example2_4000.bit");
else
ZestSC2ConfigureFromFile(Handle, "C:/Users/Shankhadeep/Documents/example2.bit");
// Send data to the card - Generate a 64-bit random number in Buffer
Buffer_tx = malloc(TRANSFER_LENGTH_FROM_HOST);
Buffer_rx = malloc(TRANSFER_LENGTH_FROM_FPGA);
for (Count = 1; Count < TRANSFER_LENGTH_FROM_HOST / 2; Count++) {
((unsigned long *)Buffer_tx)[Count] = (unsigned long)(1 << (Count - 1));
printf("Writing %x \n", Buffer_tx[Count]);
}
QueryPerformanceFrequency((LARGE_INTEGER *)&Freq);
QueryPerformanceCounter((LARGE_INTEGER *)&Start);
for (Count=0; Count<NUM_TRANSFERS; Count++)
{
ZestSC2WriteData(Handle, Buffer_tx, TRANSFER_LENGTH_FROM_HOST);
for (Count = 0;Count<TRANSFER_LENGTH_FROM_HOST / 2; Count++)
//fwrite(Buffer_tx, 64, 128, fp);
//Throws an error as soon as I write this line
fprintf(fp, "%s", Buffer_tx[Count]);
}
QueryPerformanceCounter((LARGE_INTEGER *)&End);
printf("Transfer rate to card = %.2fMBytes/sec\n", ((double)NUM_TRANSFERS*(double)TRANSFER_LENGTH_FROM_HOST*(double)Freq)/(1024.*1024.*(double)(End-Start)));
// Read data from the card
QueryPerformanceCounter((LARGE_INTEGER *)&Start);
// for (Count=0; Count<NUM_TRANSFERS; Count++)
// {
ZestSC2ReadData(Handle, Buffer_rx, TRANSFER_LENGTH_FROM_FPGA);
for (Count = 0; Count < 64; Count++) {
printf("Reading %x \n", Buffer_rx[Count]);
}
// }
QueryPerformanceCounter((LARGE_INTEGER *)&End);
printf("\n");
printf("Transfer rate from card = %.2fMBytes/sec\n",
((double)NUM_TRANSFERS*(double)TRANSFER_LENGTH_FROM_FPGA*(double)Freq)/(1024.*1024.*(double)(End-Start)));
printf("End : %d Start: %d \n", End, Start);
if (!fp)perror("fopen_s");
printf("Error is %d", err);
if (err != NULL)
fprintf(fp, "Hello");
else printf("Exit \n");
ZestSC2CloseCard(Handle);
return 0;
}
方法中执行此操作。
<强> JS
Debug Assertion Failed!
Program .. fpga_2_host.exe
File minkernel\crts\ucrt\src\appcrt\stdio\output.cpp Line 31
Expression: stream != nullptr
我个人会避免在内联HTML中包含函数定义。
答案 1 :(得分：0)
问题是我有onclick而不是onClick
谢谢！