\u8868\u5355\u4e3b\u8981\u6709\u53d7\u63a7\u7ec4\u4ef6\u548c\u975e\u53d7\u63a7\u7ec4\u4ef6\u3002<\/p>\n\n\n\n
\u65e0\u8bba\u662f\u5b66\u4e60 Vue<\/em>\uff0c\u8fd8\u662f React<\/em>\uff0c\u6700\u91cd\u8981\u7684\u662f\u8981\u8f6c\u6362\u601d\u60f3\uff0c\u8fd9\u4e00\u6b65\u975e\u5e38\u91cd\u8981\uff0c\u5f80\u5f80\u4e5f\u6bd4\u8f83\u56f0\u96be\u3002<\/p>\n\n\n\n \u5728\u4ee5\u524d jQuery<\/em> \u65f6\u4ee3\uff0c\u5f00\u53d1\u4eba\u5458\u9700\u8981\u83b7\u53d6\u5230 DOM<\/em> \u8282\u70b9\uff0c\u7136\u540e\u8fdb\u884c\u64cd\u4f5c\u3002\u800c\u5728\u73b0\u4ee3\u524d\u7aef\u5f00\u53d1\u4e2d\uff0c\u91c7\u7528\u7684\u662f MVVM<\/em> \u7684\u6a21\u5f0f\uff0c\u5c06\u89c6\u56fe\u548c\u89c6\u56fe\u6a21\u578b\u8fdb\u884c\u7ed1\u5b9a\uff0c\u89c6\u56fe\u6a21\u578b\u7684\u6539\u53d8\uff0c\u4f1a\u81ea\u7136\u7684\u5e26\u6765\u89c6\u56fe\u7684\u6539\u53d8\u3002\u5f00\u53d1\u4eba\u5458\u9700\u8981\u4e13\u6ce8\u5728\u89c6\u56fe\u6a21\u578b\u4e0a\u9762\u3002<\/p>\n\n\n\n \u56e0\u6b64\uff0c\u8fd9\u91cc\u6240\u8c13\u7684\u53d7\u63a7\u7ec4\u4ef6\uff0c\u672c\u8d28\u4e0a\u5176\u5b9e\u5c31\u662f\u5c06\u8868\u5355\u4e2d\u7684\u63a7\u4ef6\u548c\u89c6\u56fe\u6a21\u578b\uff08\u72b6\u6001\uff09\u8fdb\u884c\u7ed1\u5b9a\uff0c\u4e4b\u540e\u90fd\u662f\u9488\u5bf9\u72b6\u6001\u8fdb\u884c\u64cd\u4f5c\u3002<\/p>\n\n\n\n \u4e0b\u9762\uff0c\u6211\u4eec\u6765\u770b\u4e00\u4e9b\u5177\u4f53\u7684\u6848\u4f8b\uff1a<\/p>\n\n\n\n \u5927\u591a\u6570\u60c5\u51b5\u4e0b\uff0c\u5728 React<\/em> \u4e2d\u63a8\u8350\u4f7f\u7528\u53d7\u63a7\u7ec4\u4ef6\u6765\u5bf9\u8868\u5355\u8fdb\u884c\u64cd\u4f5c\uff0c\u8fd9\u6837\u80fd\u591f\u5bf9\u8868\u5355\u63a7\u4ef6\u7684\u6570\u636e\u8fdb\u884c\u4e00\u4e2a\u7edf\u4e00\u7ba1\u7406\u3002<\/p>\n\n\n\n \u4f46\u662f\u5728\u67d0\u4e9b\u7279\u6b8a\u60c5\u51b5\u4e0b\uff0c\u9700\u8981\u4f7f\u7528\u4ee5\u524d\u4f20\u7edf\u7684 DOM<\/em> \u65b9\u6848\u8fdb\u884c\u5904\u7406\uff0c\u6b64\u65f6\u66ff\u4ee3\u7684\u65b9\u6848\u5c31\u662f\u975e\u53d7\u63a7\u7ec4\u4ef6\u3002<\/p>\n\n\n\n <\/p>\n","protected":false},"excerpt":{"rendered":" \u8868\u5355\u4e3b\u8981\u6709\u53d7\u63a7\u7ec4\u4ef6\u548c\u975e\u53d7\u63a7\u7ec4\u4ef6\u3002 \u53d7\u63a7\u7ec4\u4ef6 \u65e0\u8bba\u662f..<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12,1],"tags":[],"class_list":["post-311","post","type-post","status-publish","format-standard","hentry","category-react-","category-uncategorized"],"featured_image_urls":{"full":"","thumbnail":"","medium":"","medium_large":"","large":"","1536x1536":"","2048x2048":""},"author_info":{"info":["\u9648 \u67d0\u4eba"]},"category_info":"React<\/a> \u672a\u5206\u7c7b<\/a>","tag_info":"\u672a\u5206\u7c7b","comment_count":"0","_links":{"self":[{"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/posts\/311","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/comments?post=311"}],"version-history":[{"count":3,"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/posts\/311\/revisions"}],"predecessor-version":[{"id":314,"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/posts\/311\/revisions\/314"}],"wp:attachment":[{"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/media?parent=311"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/categories?post=311"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/tags?post=311"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}\n
import React from \"react\";
\u200b
\/\/ \u7c7b\u7ec4\u4ef6
class App extends React.Component {
state = {
value : \"\"
}
\u200b
handleChange = (e) => {
this.setState({
value : e.target.value
})
}
\u200b
clickHandle = () => {
\/\/ \u63d0\u4ea4\u6574\u4e2a\u8868\u5355
console.log(`\u4f60\u8981\u63d0\u4ea4\u7684\u5185\u5bb9\u4e3a\uff1a${this.state.value}`);
}
\u200b
render() {
return (
<div>
<input type=\"text\" value={this.state.value} onChange={this.handleChange}\/>
<button onClick={this.clickHandle}>\u63d0\u4ea4<\/button>
<\/div>
)
}
\u200b
}
\u200b
export default App;<\/code><\/pre>\n\n\n\n\n
import React from \"react\";
\u200b
\/\/ \u7c7b\u7ec4\u4ef6
class App extends React.Component {
state = {
value1 : \"\",
value2 : \"\"
}
\u200b
handleChange = (e) => {
const name = e.target.name;
switch(name){
case \"one\": {
\/\/ \u7528\u6237\u8f93\u5165\u7684\u662f\u7b2c\u4e00\u4e2a\u8f93\u5165\u6846
\/\/ \u53ea\u80fd\u8f93\u5165\u5927\u5199
this.setState({
value1 : e.target.value.toUpperCase()
})
break;
}
case \"two\":{
\/\/ \u7528\u6237\u8f93\u5165\u7684\u662f\u7b2c\u4e8c\u4e2a\u8f93\u5165\u6846
\/\/ \u53ea\u80fd\u8f93\u5165\u6570\u5b57
const newValue = e.target.value.split(\"\").map(item=>{
if(!isNaN(item)){
return item
}
}).join(\"\");
this.setState({
value2 : newValue
})
break;
}
}
}
\u200b
clickHandle = () => {
\/\/ \u63d0\u4ea4\u6574\u4e2a\u8868\u5355
console.log(`\u4f60\u8981\u63d0\u4ea4\u7684\u5185\u5bb9\u4e3a\uff1a${this.state.value}`);
}
\u200b
render() {
return (
<div>
<input
type=\"text\"
name=\"one\"
value={this.state.value1}
onChange={this.handleChange}
placeholder=\"\u81ea\u52a8\u8f6c\u4e3a\u5927\u5199\"
\/>
<input
type=\"text\"
name=\"two\"
value={this.state.value2}
onChange={this.handleChange}
placeholder=\"\u53ea\u80fd\u8f93\u5165\u6570\u5b57\"
\/>
<button onClick={this.clickHandle}>\u63d0\u4ea4<\/button>
<\/div>
)
}
\u200b
}
\u200b
export default App;<\/code><\/pre>\n\n\n\n\n
import React from \"react\";
\u200b
\/\/ \u7c7b\u7ec4\u4ef6
class App extends React.Component {
state = {
value : \"\"
}
\u200b
handleChange = (e) => {
this.setState({
value : e.target.value
})
}
\u200b
clickHandle = () => {
\/\/ \u63d0\u4ea4\u6574\u4e2a\u8868\u5355
console.log(`\u4f60\u8981\u63d0\u4ea4\u7684\u5185\u5bb9\u4e3a\uff1a${this.state.value}`);
}
\u200b
render() {
return (
<div>
<textarea
cols=\"30\"
rows=\"10\"
value={this.state.value}
onChange={this.handleChange}
\/>
<button onClick={this.clickHandle}>\u63d0\u4ea4<\/button>
<\/div>
)
}
\u200b
}
\u200b
export default App;
\u200b<\/code><\/pre>\n\n\n\n\n
import React from \"react\";
\u200b
\/\/ \u7c7b\u7ec4\u4ef6
class App extends React.Component {
state = {
checkBoxs: [
{ content: \"html\", checked: false },
{ content: \"css\", checked: false },
{ content: \"js\", checked: false },
{ content: \"vue\", checked: false },
{ content: \"react\", checked: false },
],
}
\u200b
handleChange = (index) => {
const arr = [...this.state.checkBoxs];
arr[index].checked = !arr[index].checked;
this.setState({
checkBoxs: arr
})
}
\u200b
clickHandle = () => {
\/\/ \u63d0\u4ea4\u6574\u4e2a\u8868\u5355
console.log(this.state.checkBoxs);
}
\u200b
render() {
return (
<div>
<div>
{
this.state.checkBoxs.map((item, index) => (
<div key={index}>
<input
type=\"checkbox\"
value={item.content}
checked={item.checked}
onChange={()=>this.handleChange(index)}
\/>
<span>{item.content}<\/span>
<\/div>
))
}
<\/div>
<button onClick={this.clickHandle}>\u63d0\u4ea4<\/button>
<\/div>
)
}
\u200b
}
\u200b
export default App;<\/code><\/pre>\n\n\n\n\n
import React from \"react\";
\u200b
\/\/ \u7c7b\u7ec4\u4ef6
class App extends React.Component {
state = {
value : \"html\"
}
\u200b
handleChange = (e) => {
this.setState({
value : e.target.value
})
}
\u200b
clickHandle = () => {
\/\/ \u63d0\u4ea4\u6574\u4e2a\u8868\u5355
console.log(this.state.value);
}
\u200b
render() {
return (
<div>
<select value={this.state.value} onChange={this.handleChange}>
<option value=\"html\">HTML<\/option>
<option value=\"css\">CSS<\/option>
<option value=\"js\">JS<\/option>
<option value=\"vue\">Vue<\/option>
<option value=\"react\">React<\/option>
<\/select>
<button onClick={this.clickHandle}>\u63d0\u4ea4<\/button>
<\/div>
)
}
\u200b
}
\u200b
export default App;<\/code><\/pre>\n\n\n\n\u975e\u53d7\u63a7\u7ec4\u4ef6<\/h2>\n\n\n\n
\n
import React from \"react\";
\u200b
\/\/ \u7c7b\u7ec4\u4ef6
class App extends React.Component {
constructor(){
super();
\/\/ \u521b\u5efa\u4e86\u4e00\u4e2a ref\uff0c\u56de\u5934\u6211\u4eec\u5c31\u53ef\u4ee5\u83b7\u53d6\u5230\u548c\u8be5 ref \u7ed1\u5b9a\u4e86\u7684 DOM \u8282\u70b9
this.inputCon = React.createRef();
}
\u200b
clickHandle = () => {
\/\/ \u901a\u8fc7 this.inputCon.current \u53ef\u4ee5\u83b7\u53d6\u5230 input DOM \u8282\u70b9
console.log(this.inputCon.current.value);
}
\u200b
\u200b
render() {
return (
<div>
<input type=\"text\" ref={this.inputCon}\/>
<button onClick={this.clickHandle}>\u83b7\u53d6\u7528\u6237\u8f93\u5165\u7684\u5185\u5bb9<\/button>
<\/div>
)
}
\u200b
}
\u200b
export default App;
\u200b<\/code><\/pre>\n\n\n\n\n
<div>
{\/* \u4e00\u65e6\u4f60\u7528\u4e86 value\uff0cReact \u4f1a\u8ba4\u4e3a\u4f60\u8fd9\u662f\u4e00\u4e2a\u53d7\u63a7\u7ec4\u4ef6 *\/}
{\/* \u5982\u679c\u60f3\u8981\u7ed9\u9ed8\u8ba4\u503c\uff0c\u4f7f\u7528 defaultValue *\/}
<input type=\"text\" ref={this.inputCon} defaultValue=\"123\"\/>
<button onClick={this.clickHandle}>\u83b7\u53d6\u7528\u6237\u8f93\u5165\u7684\u5185\u5bb9<\/button>
<\/div><\/code><\/pre>\n\n\n\n\n
import React from \"react\";
\u200b
\/\/ \u7c7b\u7ec4\u4ef6
class App extends React.Component {
\u200b
constructor() {
super();
\/\/ \u521b\u5efa ref \u7684\u65f6\u5019\uff0c\u547d\u540d\u4e00\u822c\u91c7\u7528 xxxRef \u7ed3\u5c3e
this.uploadRef = React.createRef();
}
\u200b
clickHandle = () => {
\/\/ \u901a\u8fc7 this.uploadRef.current \u53ef\u4ee5\u83b7\u53d6\u5230 input DOM \u8282\u70b9
console.log(this.uploadRef.current.files);
}
\u200b
\u200b
render() {
return (
<div>
<input type=\"file\" ref={this.uploadRef}\/>
<button onClick={this.clickHandle}>\u83b7\u53d6\u7528\u6237\u8f93\u5165\u7684\u5185\u5bb9<\/button>
<\/div>
)
}
\u200b
}
\u200b
export default App;
\u200b<\/code><\/pre>\n\n\n\n