Set focus on Extjs textfield

问题

Currently I got problem with setting focus on extjs textfield. When form show, I want to set focus to First name text box and I try to use build in function focus() but still can't make it work. I am happy to see your suggestion.

var simple = new Ext.FormPanel({

    labelWidth: 75, 
    url:'save-form.php',
    frame:true,
    title: 'Simple Form',
    bodyStyle:'padding:5px 5px 0',
    width: 350,
    defaults: {width: 230},
    defaultType: 'textfield',
    items: [{
            fieldLabel: 'First Name',
            name: 'first',
            id: 'first_name',
            allowBlank:false
        },{
            fieldLabel: 'Last Name',
            name: 'last'
        },{
            fieldLabel: 'Company',
            name: 'company'
        }, {
            fieldLabel: 'Email',
            name: 'email',
            vtype:'email'
        }, new Ext.form.TimeField({
            fieldLabel: 'Time',
            name: 'time',
            minValue: '8:00am',
            maxValue: '6:00pm'
        })
    ],

    buttons: [{
        text: 'Save'
    },{
        text: 'Cancel'
    }]
});

simple.render(document.body);

回答1:

Sometimes it helps to add a little delay when focusing. This is because certain browsers (Firefox 3.6 for sure) need a bit of extra time to render form elements.

Note that ExtJS's focus() method accepts defer as an argument, so try that:

Ext.getCmp('first_name').focus(false, 200);

回答2:

Based on Pumbaa80's answer and Tanel's answer I have tried many things and found a way to do it. Here is the code:

{
    fieldLabel: 'First Name',
    name: 'first',
    id: 'first_name',
    allowBlank: false,
    listeners: {
      afterrender: function(field) {
        field.focus(false, 1000);
      }
    }
}

回答3:

You should use "afterrender" event for your textfield if you want to set focus after form is rendered.

    {
        fieldLabel: 'First Name',
        name: 'first',
        id: 'first_name',
        allowBlank: false,
        listeners: {
          afterrender: function(field) {
            field.focus();
          }
        }
    }

回答4:

Try to add the following property:

hasfocus:true,

and use the function below:

Ext.getCmp('first_name').focus(false, 200);

{
    id: 'fist_name',
    xtype: 'textfield',
    hasfocus:true,
}

回答5:

why not just add defaultFocus : '#first_name' instead of adding to much lines of code?

OR, after this.callParent(arguments); add this line Ext.getCmp('comp_id').focus('', 10);

回答6:

I've been struggling with that issue today, and I think I got the solution. The trick is using the focus() method after the show() method was called on the Form Panel. That is, adding a listener to the show event:

Ext.define('My.form.panel', {
    extend: 'Ext.form.Panel',
    initComponent: function() {
        this.on({
            show: function(formPanel, options) {
                formPanel.down('selector-to-component').focus(true, 10);
            }
    });
    }
});

回答7:

I have also been struggling with getting the focus on a text box in the Internet Explorer(As the above suggestions are working fine in chrome and Firefox). Tried the solutions suggested above on this page but none of them worked in IE. After so many research I got the workaround that worked for me, I hope it will be helpful to others as well:

Use focus(true) or if you want to delay this then use focus(true, 200) simply. In ref of the above problem the code would be:

  {
        fieldLabel: 'First Name',
        name: 'first',
        id: 'first_name',
        allowBlank: false,
        listeners: {
          afterrender: function(field) {
            field.focus(true);
          }
        }
    }

回答8:

That works for me. In textfield or textarea add listeners config:

listeners:{
            afterrender:'onRender'
        }

After, in your controller write function:

onRender:function(field){
    Ext.defer(()=>{
        field.focus(false,100);
    },1);
}

Ext.defer is wrap for setTimout(). Without Ext.defer() field.focus() doesn't work and i don't why. You cant write that function in listeners config instead of using controller's function name, but good practice is hold functions in component's controller. Good luck.

回答9:

My form was inside of a window and the textfield would not focus unless I focused the window first.

                listeners: {
                    afterrender: {
                        fn: function(component, eOpts){
                            Ext.defer(function() {
                                if (component.up('window')){
                                    component.up('window').focus();
                                }
                                component.focus(false, 100);
                            }, 30, this);
                        },
                        scope: me
                    }
                }

回答10:

Use afterlayout event. Set a flag on the element to prevent focusing multiple times for stability.

afterlayout: function(form) {
  var defaultFocusCmp = form.down('[name=first]');
  if (!defaultFocusCmp.focused) {
    defaultFocusCmp.focus();
    defaultFocusCmp.focused = true;
  }
}

回答11:

UIManager.SetFocusTo = function (row, column) {
    var grd = Ext.getCmp('gridgrn');
    grd.editingPlugin.startEditByPosition({ 'column': column, 'row': row });

}

来源：https://stackoverflow.com/questions/6591371/set-focus-on-extjs-textfield