js input搜索防抖

js input防抖，防止input多次输入调用多次

<el-input class="code" v-model="code" ref="codeInput" @input="codeInput" @blur="codeBlur"></el-input>

new Vue({
     el: '#app',
     data: function() {
         return {
         }
     },
     created() {
     },
     methods: {
         codeInput(val) {
             // 等待扫码结果输入输入框后搜索用户
             this.debounce(this.getUser, 500);
         },
         getUser() {

         },
         debounce (func, wait) {
             if (this.timeout) clearTimeout(this.timeout)
             this.timeout = setTimeout(() => {
                 func()
             }, wait)
         },
     }
 });