{"id":988,"date":"2023-03-23T22:41:43","date_gmt":"2023-03-23T14:41:43","guid":{"rendered":""},"modified":"2023-03-23T22:41:43","modified_gmt":"2023-03-23T14:41:43","slug":"Vue.js \u54cd\u5e94\u5f0f\u7cfb\u7edf","status":"publish","type":"post","link":"https:\/\/bianchenghao6.com\/988.html","title":{"rendered":"Vue.js \u54cd\u5e94\u5f0f\u7cfb\u7edf"},"content":{"rendered":"
\n
<\/p>\n
<html><\/span>
<head><\/span>
<title><\/span>Vue.js Reactive Interface<\/title><\/span>
<link rel=\"stylesheet\" href=\"index.css\">
<script src=\"https:\/\/cdn.jsdelivr.net\/npm\/vue\/dist\/vue.js\"><\/script><\/span>
<\/head><\/span>
<body><\/span>
<div id = \"reactivity_1\">
<p style = \"font-size:25px;\">Counter: {{ counter }}<\/p><\/span>
<button @click = \"counter++\" style = \"font-size:25px;\">Click Here<\/button><\/span>
<\/div><\/span>
<script src=\"index.js\"><\/script><\/span>
<\/body><\/span>
<\/html><\/span>
<\/span><\/code><\/pre>\n<\/p><\/div>\n\n Index.js\u6587\u4ef6: <\/strong>\n <\/div>\n\n var vm = new Vue({
el: '#reactivity_1',
data: {
counter: 1
}
});
vm.$watch('counter', function(nval, oval) {
alert('Counter is incremented :' + oval + ' to ' + nval + '!');
});
setTimeout(
function(){
vm.counter = 10;
},1000
)
<\/span><\/code><\/pre>\n<\/p><\/div>\n\n \u6211\u4eec\u4f7f\u7528\u4e00\u4e2a\u7b80\u5355\u7684CSS\u6587\u4ef6\u4f7f\u8f93\u51fa\u66f4\u5177\u5438\u5f15\u529b\u3002\n <\/div>\n\n Index.css\u6587\u4ef6: <\/strong>\n <\/div>\n\n html, body {
margin: 5px;
padding: 0;
}
<\/span><\/code><\/pre>\n<\/p><\/div>\n\n \u7a0b\u5e8f\u6267\u884c\u540e\uff0c\u60a8\u5c06\u770b\u5230\u4ee5\u4e0b\u8f93\u51fa:\n <\/div>\n\n \u8f93\u51fa: <\/strong>\n <\/div>\n 
\n
\n
<\/p>\n
\n \u5f53\u60a8\u5355\u51fb\"\u5355\u51fb\u6b64\u5904\"\u6309\u94ae\u65f6\uff0c\u8ba1\u6570\u5668\u5c06\u589e\u52a0\u3002\u60a8\u5c06\u770b\u5230\u5f39\u51fa\u8f93\u51fa\u6216\u8b66\u62a5\u6d88\u606f\uff0c\u5176\u4e2d\u663e\u793a\u8ba1\u6570\u5668\u5c5e\u6027\u7684\u66f4\u6539\u503c\u3002\n <\/div>\n\n \u5355\u51fb\"\u5355\u51fb\u6b64\u5904\"\u6309\u94ae\u540e\uff0c\u8bf7\u67e5\u770b\u4ee5\u4e0b\u8f93\u51fa\u3002\n <\/div>\n 
\n
\n
<\/p>\n
\u793a\u4f8b\u8bf4\u660e<\/h3>\n\n \u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u5c5e\u6027\u8ba1\u6570\u5668\uff0c\u8be5\u5c5e\u6027\u8ba1\u6570\u5668\u5728\u6570\u636e\u4e2d\u8bbe\u7f6e\u4e3a1\u76ee\u7684\u3002\u5f53\u60a8\u5355\u51fb\"\u5355\u51fb\u6b64\u5904\"\u6309\u94ae\u65f6\uff0c\u8ba1\u6570\u5668\u5c06\u589e\u52a0\u3002\n <\/div>\n\n \u521b\u5efa
\n Vue.js\u5b9e\u4f8b\uff0c\u6211\u4eec\u5fc5\u987b\u5728\u5176\u4e2d\u6dfb\u52a0\u76d1\u542c\u5c5e\u6027\u3002\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\u5c06\u5176\u6dfb\u52a0:\n <\/div>\n\n vm.$watch('counter', function(nval, oval) {
alert('Counter is incremented :' + oval + ' to ' + nval + '!');
});
<\/span><\/code><\/pre>\n<\/p><\/div>\n\n \u6211\u4eec\u5df2\u4f7f\u7528$ \u76d1\u542c\u5c5e\u6027\u5728Vue\u5b9e\u4f8b\u5916\u90e8\u6dfb\u52a0\u76d1\u89c6\u3002\u6211\u4eec\u8fd8\u6dfb\u52a0\u4e86\u4e00\u4e2a\u8b66\u62a5\uff0c\u7528\u4e8e\u663e\u793acounter\u5c5e\u6027\u7684\u503c\u66f4\u6539\u3002\u8fd8\u6dfb\u52a0\u4e86\u4e00\u4e2a\u540d\u4e3asetTimeout\u7684\u8ba1\u65f6\u5668\u51fd\u6570\uff0c\u4ee5\u5c06\u8ba1\u6570\u5668\u503c\u8bbe\u7f6e\u4e3a10\u3002\n <\/div>\n\n setTimeout(
function(){
vm.counter = 10;
},1000
);
<\/span><\/code><\/pre>\n<\/p><\/div>\n\n \u6bcf\u5355\u51fb\u4e00\u6b21\u6309\u94ae\uff0c\u8ba1\u6570\u5668\u90fd\u4f1a\u66f4\u6539\uff0c\u5e76\u4e14watch\u65b9\u6cd5\u7684\u8b66\u62a5\u4e5f\u4f1a\u88ab\u89e6\u53d1\u3002\n <\/div>\n\u5728\u8fd0\u884c\u65f6\u6dfb\u52a0\u5c5e\u6027\u3002<\/h3>\n\n \u8fd9\u662f\u59cb\u7ec8\u58f0\u660e\u5c5e\u6027\u7684\u6700\u4f73\u65b9\u6cd5\uff0c\u56e0\u4e3a\u5728Vue.js\u5b9e\u4f8b\u4e2d\u65e0\u6cd5\u68c0\u6d4b\u5230\u5c5e\u6027\u7684\u6dfb\u52a0\u548c\u5220\u9664\uff0c\u6240\u4ee5\u5728Vue.js\u5b9e\u4f8b\u4e2d\u9700\u8981\u5bf9\u5b83\u4eec\u8fdb\u884c\u9884\u5148\u53cd\u5e94\u3002\u65f6\u95f4\uff0c\u60a8\u5fc5\u987b\u4f7f\u7528
\n Vue\u5168\u5c40\uff0cVue.set <\/strong>\u548c
\n Vue.delete <\/strong>\u65b9\u6cd5\u3002\n <\/div>\n Vue.set <\/h3>\n\n \u8fd9\u7528\u4e8e\u5728\u5bf9\u8c61\u4e0a\u8bbe\u7f6e\u5c5e\u6027\u3002\u8fd9\u662f\u7528\u6765\u514b\u670dVue.js\u65e0\u6cd5\u68c0\u6d4b\u5230\u5c5e\u6027\u6dfb\u52a0\u7684\u9650\u5236\u3002\n <\/div>\n\n \u8bed\u6cd5<\/strong>\n <\/div>\n\n Vue.set( target, key, value )
<\/span><\/code><\/pre>\n<\/p><\/div>\n\n \u5728\u8fd9\u91cc\n <\/div>\n\n target\uff1a<\/strong> \u5b83\u53ef\u4ee5\u662f\u5bf9\u8c61\u6216\u6570\u7ec4\u3002\n <\/div>\n\n key: <\/strong>\u53ef\u4ee5\u662f\u5b57\u7b26\u4e32\u6216\u6570\u5b57\u3002\n <\/div>\n\n value: <\/strong>\u5b83\u53ef\u4ee5\u662f\u4efb\u4f55\u7c7b\u578b\u3002\n <\/div>\n\n \u8ba9\u6211\u4eec\u4e3e\u4e00\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50\u6765\u7406\u89e3Vue.set\u7684\u6982\u5ff5\u3002\n <\/div>\n\n \u793a\u4f8b: <\/strong>\n <\/div>\n\n Index.html\u6587\u4ef6: <\/strong>\n <\/div>\n\n <html><\/span>
<head><\/span>
<title><\/span>Vue.js Reactive Interface<\/title><\/span>
<link rel=\"stylesheet\" href=\"index.css\">
<script src=\"https:\/\/cdn.jsdelivr.net\/npm\/vue\/dist\/vue.js\"><\/script><\/span>
<\/head><\/span>
<body><\/span>
<div id = \"reactivity_1\">
<p style = \"font-size:25px;\">Counter value: {{ products.id }}<\/p><\/span>
<button @click = \"products.id++\" style = \"font-size:25px;\">Click Here<\/button><\/span>
<\/div><\/span>
<script src=\"index.js\"><\/script><\/span>
<\/body><\/span>
<\/html><\/span>
<\/span><\/code><\/pre>\n<\/p><\/div>\n\n Index.js\u6587\u4ef6: <\/strong>\n <\/div>\n\n var myproduct = {\"id\":1, name:\"shirt\", \"price\":\"1000.00\"};
var vm = new Vue({
el: '#reactivity_1',
data: {
counter: 1,
products: myproduct
}
});
vm.products.qty = \"1\";
console.log(vm);
vm.$watch('counter', function(nval, oval) {
alert('Counter is incremented :' + oval + ' to ' + nval + '!');
})
<\/span><\/code><\/pre>\n<\/p><\/div>\n\n \u7a0b\u5e8f\u6267\u884c\u540e\uff0c\u60a8\u5c06\u770b\u5230\u4ee5\u4e0b\u8f93\u51fa:\n <\/div>\n\n \u8f93\u51fa: <\/strong>\n <\/div>\n
<\/p>\n
\n \u5728\u8fd9\u91cc\uff0c\u60a8\u5c06\u770b\u5230\u6bcf\u6b21\u5355\u51fb\" Click Here\"\u6309\u94ae\u65f6\u8ba1\u6570\u5668\u503c\u90fd\u4f1a\u589e\u52a0\u3002\u8bf7\u53c2\u9605\u4ee5\u4e0b\u8f93\u51fa\u3002\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u5355\u51fb\u4e865\u6b21\u6309\u94ae\u3002\n <\/div>\n
<\/p>\n
\u793a\u4f8b\u8bf4\u660e<\/h3>\n\n \u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u9996\u5148\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\u521b\u5efa\u4e86\u4e00\u4e2a\u540d\u4e3a
\n myproduct <\/strong>\u7684\u53d8\u91cf:\n <\/div>\n\n var myproduct = {\"id\":1, name:\"shirt\", \"price\":\"1000.00\"};
<\/span><\/code><\/pre>\n<\/p><\/div>\n\n \u5b83\u88ab\u8d4b\u4e88Vue.js\u5b9e\u4f8b\u4e2d\u7684\u6570\u636e\u5bf9\u8c61\uff0c\u5982\u4e0b\u6240\u793a:\n <\/div>\n\n var vm = new Vue({
el: '#reactivity_1',
data: {
counter: 1,
products: myproduct
}
});
<\/span><\/code><\/pre>\n<\/p><\/div>\n\n \u5047\u8bbe\uff0c\u5728\u521b\u5efaVue.js\u5b9e\u4f8b\u4e4b\u540e\uff0c\u60a8\u5fc5\u987b\u5411
\n myproduct <\/strong>\u6570\u7ec4\u4e2d\u518d\u6dfb\u52a0\u4e00\u4e2a\u5c5e\u6027\u3002\u60a8\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\u6765\u505a\u5230\u8fd9\u4e00\u70b9:\n <\/div>\n\n vm.products.qty = \"1\";
<\/span><\/code><\/pre>\n<\/p><\/div>\n\n \u5982\u679c\u60a8\u5728\u63a7\u5236\u53f0\u4e0a\u770b\u5230\u8f93\u51fa\uff0c\u5219\u5c06\u5728\u4ea7\u54c1\u5217\u8868\u4e2d\u627e\u5230\u8be5\u6570\u91cf\uff0c\u7136\u540e\u6dfb\u52a0\u6570\u91cf\u3002 get\/set\u65b9\u6cd5(\u57fa\u672c\u4e0a\u589e\u52a0\u4e86\u53cd\u5e94\u6027)\u53ef\u7528\u4e8eid\uff0c\u540d\u79f0\u548c\u4ef7\u683c\uff0c\u800c\u4e0d\u9002\u7528\u4e8e\u6570\u91cf\u3002\n <\/div>\n\n \u56e0\u6b64\uff0c\u60a8\u53ef\u4ee5\u770b\u5230\u4ec5\u6dfb\u52a0\u5c31\u4e0d\u80fd\u5b9e\u73b0\u53cd\u5e94\u6027Vue\u5bf9\u8c61\u3002\u5728Vue.js\u4e2d\uff0c\u60a8\u5fc5\u987b\u9996\u5148\u521b\u5efa\u5176\u6240\u6709\u5c5e\u6027\u3002\u5982\u679c\u60a8\u4ee5\u540e\u60f3\u8981\u8fd9\u6837\u505a\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528Vue.set\u3002\u8bf7\u53c2\u9605\u53e6\u4e00\u4e2a\u793a\u4f8b\uff0c\u8be5\u793a\u4f8b\u7a0d\u540e\u4f1a\u6dfb\u52a0\u6240\u6709\u5c5e\u6027\u3002\n <\/div>\n\n \u793a\u4f8b: <\/strong>\n <\/div>\n\n Index.html\u6587\u4ef6: <\/strong>\n <\/div>\n\n <html><\/span>
<head><\/span>
<title><\/span>Vue.js Reactive Interface<\/title><\/span>
<link rel=\"stylesheet\" href=\"index.css\">
<script src=\"https:\/\/cdn.jsdelivr.net\/npm\/vue\/dist\/vue.js\"><\/script><\/span>
<\/head><\/span>
<body><\/span>
<div id = \"reactivity_1\">
<p style = \"font-size:25px;\">Counter value: {{ products.id }}<\/p><\/span>
<button @click = \"products.id++\" style = \"font-size:25px;\">Click Here<\/button><\/span>
<\/div><\/span>
<script src=\"index.js\"><\/script><\/span>
<\/body><\/span>
<\/html><\/span>
<\/span><\/code><\/pre>\n<\/p><\/div>\n\n Index.js\u6587\u4ef6: <\/strong>\n <\/div>\n\n var myproduct = {\"id\":1, name:\"shirt\", \"price\":\"1000.00\"};
var vm = new Vue({
el: '#reactivity_1',
data: {
counter: 1,
products: myproduct
}
});
Vue.set(myproduct, 'qty', 1);
console.log(vm);
vm.$watch('counter', function(nval, oval) {
alert('Counter is incremented :' + oval + ' to ' + nval + '!');
})
<\/span><\/code><\/pre>\n<\/p><\/div>\n\n \u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528Vue.set\u901a\u8fc7\u4ee5\u4e0b\u4ee3\u7801\u5411\u6570\u7ec4\u6dfb\u52a0\u4e86\u6570\u91cf:\n <\/div>\n\n Vue.set(myproduct, 'qty', 1);
<\/span><\/code><\/pre>\n<\/p><\/div>\n\n \u5982\u679c\u5728\u63a7\u5236\u53f0\u4e0a\u8fd0\u884c\u6b64\u793a\u4f8b\uff0c\u60a8\u5c06\u770b\u5230\u4f7f\u7528Vue.set\u65b9\u6cd5\u6dfb\u52a0\u4e86\u6570\u91cf\u7684\u83b7\u53d6\/\u8bbe\u7f6e\u3002\n <\/div>\n Vue.delete <\/h3>\n\n Vue.delete\u51fd\u6570\u7528\u4e8e\u52a8\u6001\u5220\u9664\u5c5e\u6027\u3002\u8fd9\u4e5f\u7528\u4e8e\u514b\u670dVue.js\u65e0\u6cd5\u68c0\u6d4b\u5230\u5c5e\u6027\u5220\u9664\u7684\u9650\u5236\u3002\n <\/div>\n\n \u8bed\u6cd5: <\/strong>\n <\/div>\n\n Vue.delete( target, key )
<\/span><\/code><\/pre>\n<\/p><\/div>\n\n \u5728\u8fd9\u91cc\n <\/div>\n\n target<\/strong>: \u5b83\u7528\u4e8e\u6307\u5b9a\u5bf9\u8c61\u6216\u6570\u7ec4\u3002\n <\/div>\n\n key: <\/strong>\u7528\u4e8e\u6307\u5b9a\u5b57\u7b26\u4e32\u6216\u6570\u5b57\u3002\n <\/div>\n\n \u8ba9\u6211\u4eec\u770b\u4e00\u4e2a\u793a\u4f8b\uff0c\u6f14\u793a\u5982\u4f55\u4f7f\u7528Vue.delete\u51fd\u6570\u5728Vue.js\u4e2d\u52a8\u6001\u5220\u9664\u4efb\u4f55\u5c5e\u6027\u3002\n <\/div>\n\n \u793a\u4f8b<\/strong>\n <\/div>\n\n Index.html\u6587\u4ef6: <\/strong>\n <\/div>\n\n <html><\/span>
<head><\/span>
<title><\/span>Vue.js Reactive Interface<\/title><\/span>
<link rel=\"stylesheet\" href=\"index.css\">
<script src=\"https:\/\/cdn.jsdelivr.net\/npm\/vue\/dist\/vue.js\"><\/script><\/span>
<\/head><\/span>
<body><\/span>
<div id = \"reactivity_1\">
<p style = \"font-size:25px;\">Counter value: {{ products.id }}<\/p><\/span>
<button @click = \"products.id++\" style = \"font-size:25px;\">Click Here<\/button><\/span>
<\/div><\/span>
<script src=\"index.js\"><\/script><\/span>
<\/body><\/span>
<\/html><\/span>
<\/span><\/code><\/pre>\n<\/p><\/div>\n\n Index.js\u6587\u4ef6: <\/strong>\n <\/div>\n\n var myproduct = {\"id\":1, name:\"shirt\", \"price\":\"1000.00\"};
var vm = new Vue({
el: '#reactivity_1',
data: {
counter: 1,
products: myproduct
}
});
Vue.delete(myproduct, 'price');
console.log(vm);
vm.$watch('counter', function(nval, oval) {
alert('Counter is incremented :' + oval + ' to ' + nval + '!');
})
<\/span><\/code><\/pre>\n<\/p><\/div>\n\n \u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528Vue.delete\u51fd\u6570\u901a\u8fc7\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\u4ece\u6570\u7ec4\u4e2d\u5220\u9664\u4ef7\u683c:\n <\/div>\n\n Vue.delete(myproduct, 'price');
<\/span><\/code><\/pre>\n<\/p><\/div>\n\n \u5f53\u60a8\u5728\u63a7\u5236\u53f0\u4e0a\u770b\u5230\u4ee5\u4e0a\u793a\u4f8b\u7684\u8f93\u51fa\u65f6\uff0c\u60a8\u4f1a\u770b\u5230\u5220\u9664\u4ef7\u683c\u540e\uff0c\u5728\u63a7\u5236\u53f0\u4e0a\u4ec5\u53ef\u89c1id\u548cname\u3002\u6211\u4eec\u8fd8\u5c06\u6ce8\u610f\u5230get\/set\u65b9\u6cd5\u88ab\u5220\u9664\u4e86\u3002\n <\/div>\n
\n <\/body>
\n<\/html><\/p>\n","protected":false},"excerpt":{"rendered":"Vue.js \u54cd\u5e94\u5f0f\u7cfb\u7edfzh-cn","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[122],"tags":[],"class_list":["post-988","post","type-post","status-publish","format-standard","hentry","category-vuejc"],"_links":{"self":[{"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/posts\/988"}],"collection":[{"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/comments?post=988"}],"version-history":[{"count":0,"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/posts\/988\/revisions"}],"wp:attachment":[{"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/media?parent=988"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/categories?post=988"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/tags?post=988"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}