How does js solve the problem of pressing the back key to back the page after setting the text box as read-only?
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Js solve text box set read-only and press back key to back the page
The solution is to define a global document.documentElement.onkeydown event to detect the action of the page each time the key is pressed
Document.documentElement.onkeydown = function (evt) {
Var b =! evt, oEvent = evt | | window.event
If (oEvent.keyCode = = 8) {
Var node = b? OEvent.target: oEvent.srcElement
Var reg = / ^ (input | textarea) $/ I, regType = / ^ (text | textarea) $/ I
If (! reg.test (node.nodeName) | |! regType.test (node.type) | | node.readOnly | | node.disabled) {
If (b) {
OEvent.stopPropagation ()
}
Else {
OEvent.cancelBubble = true
OEvent.keyCode = 0
OEvent.returnValue = false
}
}
}
}
When the backspace key is detected, the corresponding operation is judged to deal with the problem of disabling fallback page refresh.
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