React中的条件渲染方法

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条件渲染

• 由于react的jsx语法在dom标签中无法写if判断语句，可以使用三元运算符或者&&来进行条件判断

1、&&条件判断

<div className="checkResult">
	{
     this.state.messageContent['secondApproverStatus'] == 0 && (
		<span style={
     {
      color: 'rgba(207, 0, 0, 1)' }}>待处理</span>
	)}
	{
     this.state.messageContent['secondApproverStatus'] == 1 && (
		<span style={
     {
      color: 'rgba(85, 197, 159, 1)' }}>通过</span>
	)}
	{
     this.state.messageContent['secondApproverStatus'] == 2 && (
		<span style={
     {
      color: 'rgba(255, 161, 51, 1)' }}>驳回</span>
	)}
</div>

2、三元运算符

<div style={
     {
      display: this.state.messageContent['status'] === 1 ? 'none' : 'block' }} >

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