如果客户已经填写了字段,我需要更改输入的边框颜色。
如何使用VueJS做到这一点?
<div class="some-basic-div", '@change' => 'checkForInput'>
<div class="dc-form-group ">
<input type='text' id='first_name' >
</div>
<div class="dc-form-group ">
<input type='text' id='last_name' >
</div>
<div class="dc-form-group ">
<input type='text' id='some_text' >
</div>
</end>
我尝试使用纯JavaScript。
checkForInput: function(e) {
let targetDiv = event.target;
if (targetDiv.value == "") {
targetDiv.classList.remove("mod-group-success");
} else {
targetDiv.classList.add("mod-group-success") ;
}
}
因此,当我更改输入时,我需要更改我填写的输入样式。
答案 0 :(得分:1)
下面是一个简单的类绑定演示。
Vue.config.productionTip = false
app = new Vue({
el: "#app",
data: {
testValue: ''
},
computed: {
computedInputStyleEnable: function () { // or use one method instead of computed property
//apply your own logic at here to determinate if enable input-has-value-style
return this.testValue && this.testValue.length > 0
}
},
methods: {
applyInputStyle: function (targetInput) { // bind with one method and return Array
return [targetInput && targetInput.length > 0 ? 'input-has-value-style' : 'input-no-value-style']
}
}
})
.input-has-value-style {
border: 2px solid green;
background-color:lightgreen;
}
.input-no-value-style {
border: 2px solid red;
background-color:pink;
}
<script src="https://unpkg.com/vue@2.5.16/dist/vue.js"></script>
<div id="app">
<div>
<p>Already filled in {{testValue.length}} characters.</p>
<input type='text' v-model="testValue"
:class="{'input-has-value-style': computedInputStyleEnable}"
/>
</div>
<div>
<p>Already filled in {{testValue.length}} characters.</p>
<input type='text' v-model="testValue"
:class="applyInputStyle(testValue)"
/>
</div>
</div>
答案 1 :(得分:0)
我已经编写了以下代码来处理此问题:
Vue.config.productionTip = false
app = new Vue({
el: "#app",
data: {
testValue: ''
}
},
methods: {
checkForInput: function(e){
let input = event.target
if (input.value != "") {
input.classList.add("mod-group-success") ;
} else {
input.classList.remove("mod-group-success");
}
}
}
})
并放在前端:
'@change' => 'checkForInput'