lodash need to introduce new
I'm using npm way
Use _.debounce method of lodash
Specific code:
<!doctype html> <html lang="en"> <head> <meta charset="UTF-8"> <title>vue.js 使用lodash库减少watch对后台请求压力 </title> <script src="vue.js"></script> <script src="node_modules/axios/dist/axios.js"></script> <script src="node_modules/lodash/lodash.js"></script> </head> < Body > < div ID = "ASK" > <-! VUE not control body and html tags -> < INPUT type = "text" V-Model = "Word" > < h1 of > {{}} Result </ h1 of > </ div > < Script > var App = new new Vue ({ // instantiate VUE EL: ' #ask ' , // VUE ask the control of the element id, // Watch can monitor multiple variables watch: { // listener word variable word: _ Debounce (. Function (newV, oldV) { the console.log ( ' old value: ' + oldV + ' =======> new value: ' + newV); // where I can write an asynchronous request to use the Axios axios.get ( ' api.php Word =? ' + newV) .then ( function (RES) { console.log (RES, ' this is the value returned by asynchronous ' ); // here asynchronous write operation after the value obtained app.result = res.data; }); },3000) }, data:{ word:'', result:'' } }); </script> </body> </html>